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Women's hair is the cause of the jerky noise of wireless microphones I'm Yamakawa @HSR_YB, a sound reformer whose main business is to improve the sound quality of video and audio data. The other day, I helped improve the sound quality of the teaching materials used for e-learning teaching materials. Noise missed in wireless microphone recording The material of the client who produces video teaching materials on a daily basis is a wireless microphone recording the voice of the instructor in charge. Appropriate noise processing was applied. However, it was said that there was a problem with the noise that was not noticed at the time of recording, and that the sound quality was NG. The cause of "ziri-ziri noise" is that the instructor was a woman with medium hair. It seems that her hair was touching the pin microphone part as her body moved. The wireless microphone, which is a high-sensitivity condenser microphone, makes a sound every time the hair touches it. Noise at zero distance from the microphone is tough The hair that has touched the microphone directly and the microphone are at zero distance. Even the slightest noise is quite powerful. It was almost like the noise of the wireless microphone and the cloth rubbing of clothes, which tend to be drama content. (A hidden pin microphone is rubbed by the acting movement of the actor) If the noise is close to the rubbing noise, it cannot be removed by the normal noise suppressor used to reduce the environmental noise. RX8 De-rustle that can reduce cloth rubbing noise Since it is in a state close to the rubbing sound of cloth, I used the De-rustle of IZotope RX 8 for restoration. This is a plug-in module dedicated to removing cloth rubbing noise, which is used in post-production of movie works. De-rustle can be strongly removed. However, since the cloth rubbing sound is mixed in many of the bands, if the removal setting is made boldly, the original material will be seriously damaged and a sense of discomfort may remain. In fact, to deal with the "jerky noise" that occurs when you touch the microphone directly, you need to do some strong processing. It's a very difficult decision to adjust. The important point is how much noise is removed and how to recover the missing voice component. In this project, we not only raised the treble range with an equalizer, but also finely adjusted the TAPE saturator and finished it. Repairing troubled audio is rarely solved with a single plug-in Repairing troubled voices requires complex processing in most cases. It is rare that one plug-in can solve all problems. Choosing a prescription that gives the right amount of treatment is of utmost importance. Even if you get the latest software and watch the video manual, you need experience to get good results. To be honest, even as a professional who handles hundreds of sound quality improvements a year, it is difficult to judge whether or not it can be improved without actually processing the audio material in question. Therefore, in the hybrid sound reform that I run, even in the estimate, We always take care of the materials you are having trouble with before we go. Please feel free to contact us if you have any concerns about the sound quality of various audio data such as video. (Orders from English-speaking countries are also possible)

Important academic societies and lectures that require transliteration. I think there are many people who record the contents with a voice recorder. The other day, I received a consultation that the microphone in the venue was so loud that I could hardly hear the recorded content. It seems that clients always use voice recorders when attending conferences. In order to avoid the risk of recording failure, we also recorded voice memos on the iPhone as well as a dedicated voice recorder at the same time. He asked us to present two types of files to this service and clear one of them. The problem that the performer's voice echoes too much in a large space The recorded sound source was certainly hard to hear as it was. The voice of the performer echoed in the large venue. These improvements are not the ones with a high probability of being adopted through trials, but are difficult projects. The point of improving such a sound source is ① Suppress ambient noise ② Reduce only reverberation ③ Emphasize the voice of the performer ④ Overall sound pressure increase The above is the main subject, but if the reverberation component is extremely removed, the balance of the sound will be significantly lost, and it will often be difficult to hear, especially in the case of a speaking human voice. In addition, the sound that is difficult to hear is that the performer's voice echoes in the venue like a "warn", so even if the reverberation component is reduced, the echo will still be emphasized when raising the performer's voice. It's easy to go around in a dignified manner. Therefore, it is difficult to present an improved sound source that nods the client unless (1) to (4) are processed in an exquisite balance. Why this improvement worked The sound source this time had a low-frequency "goo" sound mixed in with the "(1) ambient noise" component for a long time, so the biggest thing was that removing these sound improved the sound of the performer's voice. It's a success factor. We couldn't reduce the reverberation component so much, but we were able to capture what we were talking about, so we decided to use it safely. Since this is a relatively difficult project, there is no guarantee that it will succeed, but if you have a problem with an "inaudible sound source" even though you must translate it, please feel free to contact us. You can try it for free with the sound source you actually want to improve. It was Yamakawa, a sound former of hybrid sound reform that operates a service that clears voice memos. #ボイスメモ #ボイスレコーダー #録音アプリ #響いて聞こえない #文字起こし #反訳作業 #音声クリア化

This service started when I heard the sound of old VHS at the Live music club where I appeared and thought "What's this?" Recently, we have been working on a wide range of sound quality corrections such as sound adjustment of movies, voice restoration of video production companies, clarification of voice recorders, etc., but even now half of the users are high level music activities in earnest. Musician. Why can we call it high level? Of course, that's because it's an artist who can provide attractive songs and performances even if they are played and recorded in one live performance. I personally like songs that have been written with automation and DAW edited for all effects, but live recordings are sometimes more realistic and inspiring than intentionally recorded records. Was there no howling mixed in the live sound source? After a free trial, we helped create a full album with only live recordings. Howling was mixed in the main song, which is the representative song of the band. Can this be removed? It was from the consultation. The band, which consists of vocals, acoustic guitar, and violin + chorus, produced very groovy and comfortable songs even in a style without a rhythm section. The howling in question is not a state in which the vocalist goes in front of the speaker and becomes a blatant "pee", but a thin howling of about 5 to 10 seconds at random points. Chain with the white ball of the guitar. I imagine that the cause is that the environment on the stage is changing due to play. The lyrics aren't strong enough to be drowned out, but it's a level that even an amateur can tell, "Oh, howling." It was a rather difficult sound source to release as a finished product sound source. Howling is clearly heard as a "foreign body" in the surrounding sounds. It can be clearly identified by the spectrogram meter (a meter that visualizes the sound components) of the application called RX that we use for editing. Sometimes it's very difficult to find a sound that doesn't know where it blends in and is confused, but if you can identify the location, you can locally reduce the volume or blend it into the surrounding sounds to make it almost unnoticeable. I will. Proposals for mastering live sound sources "It's amazing! Then can you make corrections like ✖✖?" It became an exchange with the musician who used it, and it was a little mistake part, another howling sound source, an air recording sound source with a little environmental noise. After receiving many requests such as noise elimination, it ended up being a full album with more than 13 songs. I've had users buy their skills, but I think it's a big reason that I proposed not only so-called "noise elimination and correction" but also live mastering that adds value to the song. I will. Unlike multi-recorded sound sources, if individual instruments and microphones are not recorded in para, in many cases the instrument balance will be a little unbalanced. With sound sources recorded in the air at a live house, noise in the audience seats is still annoying, and even if you add mastering sound pressure, they will be emphasized. It is also a fact that there is a big difference from the quality of live sound sources released by professionals on DVDs. As I mentioned at the beginning of the blog, the reason why I started the service was that the old VHS sound source that I appeared in was too much. Cheap sound → It's too different from the sound you actually experienced live Audio restoration (voice restoration technology) using a spectrogram meter is a new technology under development that is less than 10 years old. There is almost no technical difference with a well-known veteran engineer. In addition, we have been actively working on sound sources with severe recording conditions not only for professionals but also for general users, so it can be said that only the restoration experience value is top class in Japan. (Top engineers do not receive such troublesome and unprofitable work) There are quite a lot of repeaters because they feel the value of enjoying their own performances with good sound. The fusion of the above techniques with the latest mastering can dramatically increase the value of the live recording (which can be difficult, of course). "I want you to enjoy live performances with professional-class sound quality!" We will continue to propose hybrid live sound sources without changing such aspirations. We will not compromise on technical research for that purpose. We look forward to a free trial from a band that has absolute confidence in their live performance. (Free trial available) Noise removal and mastering of live sound sources with poor sound quality #Live sound source #Mastering #Live house #Recording #Noise removal #Distribution release

The other day, I received an order from a video production company for a highly difficult project. Despite the sound of several tens of seconds, we finally delivered it by repeating trials and errors many times due to strict finish requests. Guidance announcement in the venue is fragile in the report voice at the event venue The request for audio restoration was the video content to be reported at a certain event. While the reporter is talking about the situation of the venue, the voice of a long announcement that the announcer who manages the inside of the event venue guides the guests in the venue is fragile. The point is to improve the situation where the voice of the announcement is close to zero by making the best use of the voice of the reporter while making the most of the presence in the hall. Originally this cannot be adopted as an NG material It seems that the video cameraman was recording the audio at the same time, but probably he wasn't taking the audio monitor. It seems that it was decided as a material that can be used for this chan without worrying about the announcement in the hall chatting with Bella Bella behind. The volume of the announcement in the hall was large, and it was recorded with a balance of about 10: 8 with the volume of the reporter who is the leading role. Since the distance to the microphone is different, the sound in the hall can be heard with a little echo. While the reporter is speaking, the voice is drowned out to some extent for a while, but all the time when the reporter is not speaking is completely filled with the voice of the venue announcer. It can be said that the best way to edit is to use the air audio material of the site sound and replace it with dubbing while looking at the screen, but there is no material that can be mixed (the site sound of rustling that you can not hear the announcement). It's a closing comment that must be included, but it wasn't something that could be retaken. The hardest part was the discrimination and mitigation of voice components. The procedure of the editing work that we first performed with RX6 Advanced, which we mainly use for this kind of voice processing. Silence other than the reporter talking Using an environmental sound synthesis module called Ambience Match, we capture the "buzzing sound" of the venue from the part of this material that no one is talking about, and synthesize it into the silent part. While enlarging every part of the spectrum meter and finely pinpointing it, the mitigation process is steadily performed while searching for the voice of the announcement in the hall. It's easy to itemize, but the work ratio of ①②③ is about 1: 1: 350. To be clear, work while repeating ③ transcendentally and steadily with trials and errors. Since both the reporter and the announcer are women, the voice is recorded in almost the same band in the voice data, so the cut amount will affect the voice of the reporter you want to utilize. The first sample proposed version did not satisfy the client in this part. However, due to the high expectations for our technical capabilities, we had the budget and delivery time increased, and after proposing the remaining two takes, we were able to adopt them. There were almost no cases where it took so much time to edit a few tens of seconds, but there are cases where we can accept it if the budget and delivery conditions are met. Please feel free to contact us as the first trial is free of charge for such seemingly impossible improvements. * If quality is prioritized, please fill in the budget of the inquiry form at the upper limit as much as possible. We will adjust the grade according to the budget to some extent. (Because we are always following the risk of rejection when it cannot be improved) Video audio recording trouble (missing pin microphone recording) Repair case #Video production #Recording mistake #Voice repair #Announcer #Local report

The other day, a client who handles a lot of video content of a certain genre requested to remove audio noise. The whole video was uniformly mixed with a rather terrible "boom" audio noise. Imagine that there was a problem with the plug connection, etc. due to a problem with the equipment. If a video cameraman who also records audio brings a linear PCM recorder to the sub unit, or if there is a problem recording two microphones, a gun microphone (both are mono) and a built-in microphone of the camera, on different channels. It seems that there are many cases where it is recorded with insurance. Even so, in simple shooting with a single unmanned fixed camera, there are times when only one audio is recorded without assuming such trouble. For professional creators, voice troubles in such cases can be said to be a serious mistake of losing the next job. At first glance, there are many cases where even a sound source in a terrible state, "this may not be possible", can be improved when recording with professional equipment. We delivered it to our client safely. Most professional sound quality improvements cover serious mistakes, so it's annoying that we can't easily publish improvement samples. You can make a trial order of "Trouble sound source in trouble" by hybrid sound reform. It is also widely used by professional video production companies and freelance video photographers. Please feel free to try it. We accept sound adjustment, restoration, and noise removal of video content. #Recording mistake #Equipment trouble #Voice noise #Video production

I was asked to adjust the sound of a documentary film (USA) The other day, I helped with an overseas movie work. A documentary that records the activities of children living in New York for a long time. The theme is marine environmental issues, which is a hot topic now. Through education, we are realistically capturing changes in children's consciousness. The center of the stage is the actual elementary school classroom. Growing children are universal and very energetic. If you think of a classroom during breaks, you can easily imagine the noise. Interview with one camera often used in documentaries The documentary audio is characterized by its realistic vividness, including the environmental sounds of the place. When getting comments from performers, recording in a noisy place is often harder to hear than expected, and in cases where it is played at a movie theater, it is often jarring, so proper sound adjustment is required. The client (director of the work) requested the first time, especially the sound adjustment of around 30 cuts where the sound condition is severe. The following scenes are cuts that require sound adjustment. ・Noisy rattling noise in the background of comments during breaks (reduction of noises and voices over comments). ・Vowel breaking due to a child suddenly speaking in a loud voice. ・Lecture using a microphone in a large classroom. (There are many reverberations and it is difficult to hear the voice) ・Comments at the beach (Mike blown by the sea breeze) ・During the lecture at the entrance, the voice of the telephone responding in the background. We were satisfied with these sound adjustments, and in the end we received many additional orders, including more than 70% of the cuts in the movie and narration correction recorded in the studio. Use the high cost performance sound wisely The client is a Japanese director living in NY. In order to outsource full-scale sound adjustment locally, it is common to order from an engineer who has a studio and is in business. NY, which has a high land price, has a world-class fee structure and the production budget is tight. He said that he found this site by surfing the net to improve costs. After delivery, the subsequent work (MA and mix) was done in a high-priced studio in NY, It was said that our sound adjustment technology was highly evaluated by local engineers. It is said that you can get credit, so I would like to introduce it on this blog when it is decided to release it. The situation is similar in Japan, with self-produced films and documentaries with a small budget. Opportunities to consult about sound adjustment are increasing. We are gradually improving the work environment that allows us to be more flexible. Not only the works of movie creators, but also many negative voices such as clarification of general voice recorder sound sources are handled on a daily basis, so you can expect voice repair with a lot of damage. Please feel free to contact us. You can request the sound adjustment of self-produced movie / video content.

Noise removal and remastering of classical concerts I'm Yamakawa @HSR_YB, a sound reformer. Recently, I have received repeated orders for noise removal from classical music enthusiasts' private sound sources. There are various sound source sources, such as old TV recordings such as VTRs, FM air checks, and those recorded in the audience seats of concerts, with the promise that the client will enjoy them for personal use. In classical music, various conductors and orchestras perform timeless masterpieces, so even the same songs have different interpretations and playing styles. Therefore, it seems that your favorite performance may not be a CD that is on the market. Broadcast archive sound source noise Broadcast sound sources were originally stored in videos and tapes, and now they are enjoying playback by converting them to digital files. The first request was for a consultation that the radio noise that had been mixed in the high frequency range called "pee" could not be removed. For listeners who want to immerse themselves in the performance that they feel is the best, even a slight "pee" noise is annoying. The pitch of the beeping sound is clear and stable, so if it is not so loud, it can be removed cleanly in most cases. After removing this cleanly, I started to request it repeatedly. Noise removal from audience recordings is a Hardwork The most recent work I received was a sound source that recorded the concert that the client himself went to in the audience. If you use a linear PCM recorder and can record in a good place, you may be able to enjoy some music. However, it was difficult to record in the audience seats, and it was located near the customers who made noise with bad etiquette. Anxious noises such as clearing throat and stepping have been mixed in most parts of the performance. Classical concerts have a large dynamic range and are very delicate. Removing them is not easy. Above all, the creaking sound of the chair, which was mixed many times during the delicate violin solo, was in the AA class of noise removal difficulty. Even the latest technology cannot handle these noises automatically. "Gi" "ri" "ri" of the chair It is necessary to finely pinpoint each note. It is a fine edit just like a painting restoration. .. Also supports mastering to adjust how to pull out the instrument This client also received a request for overall sound quality adjustment. Despite the violin concerto, the leading solo violin sounds cloudy. It was also a factor that the bass range was strong due to the recording position, but we also performed remastering with exquisite equalizing adjustment and saturation. Estimate of sound source with high repair difficulty and long length Many full orchestra symphonies and concertos have a long playing time. Therefore, when the noise processing of the difficulty level AA class takes a small hour, a daunting task is waiting. Therefore, the estimate is expensive, and casual orders may be difficult unless you are a wealthy person and a maniac. If you have an important sound source that you really want to repair and listen to in a beautiful state even if it costs money, please contact us. You can order after receiving the actual sound source and listening to the improvement effect.