Something about the audio went terribly wrong with the last update I did

Not even those of ALSA aplay it's working fine, it seems like there no soundcards (Although it is a laptop), alsamixer does not open, the pulse only has dummy outputs, and now I am worried. I have a feeling that can be useful.

What went so wrong!

How to play audio with nodeJs readFileSync and the javascript audio API?

I'm making an audio player with javascript, more specifically nodejs Y electronAt the moment I am playing the audio using the tag , putting the path to the file in the property src of the label and controlling the reproduction by javascriptHowever, I wonder if it is possible to read the audio file using the function fs.readFileSync from nodejs and put the buffer on the object Audio. Is that possible?

Windows application – GiliSoft Audio Recorder Pro 10.0.0 multilingual | NulledTeam UnderGround

File size: 14 MB

GiliSoft Audio Recorder Pro is an audio recorder perfect for recording computer and microphone sounds in AAC, AC3, AIFF, AMR, AU, FLAC, M4A, M4B, M4R, MKA, MP2, MP3, OGG, RA, VOC, WAV files or WMA in Windows 7/8. Recording the sound that passes through your audio card is not a difficult task, but GiliSoft Audio Recorder Pro promises to make everything much easier, even for those without advanced computer skills.

1) Allows you to predefine the recording qualities to help quickly set and manage the recording parameters.
2) Allows you to start and stop recording automatically with the built-in timer.
3) Supports silence detection during audio recording.
4) Built-in advanced sound engine to produce high quality recordings.
5) Allows you to preset your recording device before you start recording.

Audio Recorder Pro is an audio recorder perfect for recording your own voice, music or any other sound working directly with your sound card. Supports recording input / source from a microphone, audio transmission from the Internet, external input devices (e.g. CD, LP, music cassettes, telephone line, etc.), as well as other applications such as Winamp, Media Player, etc.
With a built-in advanced audio recording engine, the recorder produces high quality recordings. With the automatic recording function, you can set the time to start / stop a recording.

Exclusive features of GiliSoft Audio Recorder Pro:
Powerful audio recorder
So far, a number of audio recording software floods the market, but every day many people are still looking for "how to record audio on the PC with (or without) a microphone." Because most of them make many users feel confused and tired, they even allow them to learn where to enable "Stereo Mix." In fact, if you try to use GiliSoft Audio Recorder Pro, you will know that recording audio is very easy and you can record the sound of the computer and your voice at the same time, you just have to choose "Computer and microphone sounds".

CD quality recordings
GiliSoft Audio Recorder Pro can record sound played by other programs, including Windows Media Player, iTunes, Musicmatch Jukebox, WinAmp, Internet telephony programs such as Skype and many others. The sound played may be sound from local files that are being played or sound from Internet transmissions. With a built-in advanced audio recording engine, the recorder produces high quality recordings.

Internet streaming recording (audio streaming)
It is not necessary to install a virtual audio device, Gilisoft Audio Recorder Pro is a real-time digital audio recorder that records any audio source that is automatically detected on your computer. You can perfectly capture audio from more than 500 popular radio stations and online music sites, including YouTube, Pandora, Spotify, BBC Radio, iTunes Radio and much more.

Recording Skype, Yahoo Messenger and Google Talk
Record all voice conversations, including Skype, Yahoo Messenger, Google Talk and any other VoIP application, and save the conversations as wav, mp3 ogg or wma files. It can work in automatic mode (it will record automatically when you answer a call or voice conversation with any VoIP application) or in manual mode. You can configure it to run automatically with Windows.

Recording schedule
Gilisoft Audio Recorder Pro includes an advanced time-activated recording that allows you to schedule the recording for a website or anything that runs on your desktop to start or stop at a certain time. With this function, the recordings are made automatically in the option One, Daily and Weekly that you choose. With car. Recording function, you can set the time to start a recording, as well as the conditions (for example, time, file size, recording duration) to stop a recording

Flexible configuration and automatic gain control
Each format (AAC, AC3, AIFF, AMR, AU, FLAC, M4A, M4B, M4R, MKA, MP2, MP3, OGG, RA, VOC, WAV, WMA) is provided with a predefined list to obtain an accurate result. It automatically detects the audio recording formats that your sound card supports and then sets the application parameters to get the best possible performance. The default parameters work in most cases, but you can easily change them to best suit your needs.

Long lasting recording support
Gilisoft Audio Recorder Pro records audio to MP3 / WMA / WAV directly and can automatically pause the suspension when there is no sound. And you can record on the fly as long as you want without interruption.

Supports multiple sound cards
With the recording preview function, you can preview the result with the selected audio recording device / source before starting a recording. It is compatible with more than one sound card (includes USB sound card).

What's new:
Updates: the official site does not provide information about changes in this version.


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mac: the audio interface does not appear in the system preferences output input

Running Catalina OS. Unfortunately, connecting my Focusrite Saffire 6 interface is not recognized in System Preferences> Sound> Output Input. Very frustrating. I am using the correct high-speed USB cable and the interface is shown in my USB tree (About this mac> System Report> Hardware> USB) but it only shows & # 39; Internal speakers & # 39; in Exit and input of system preferences. I can't find anything online about how to make the Mac recognize the interface. Just an article about deleting temporary files that I did without success. I also downloaded drivers for the USB 1.1 driver, although I'm pretty sure I'm running 2.0.

Applications: is it possible to access voice-to-text audio clips for debugging?

Is there any way to access the audio clip that is used for voice to text transcription from Google?

I've been getting more and more inaccurate results using Google's voice to text output. After discovering that my Samsung phone has more than one microphone, I wonder if this may have to do with which microphone is being used and / or if any audio processing that is affecting accuracy is being applied.

If I could debug these waveforms / recordings myself, at least I could see if the input itself is the source of the inaccuracy, or if it is something else.

Macos: Sony wf-1000xm3 audio quality is different between Mac and Android for the same song

Today I was listening to "Lil Jon – Get HQ HD bass with bass boost" on YouTube using my Sony wf-1000xm3 headphones. First I was using my Mac (16 inches, 2019) to stream the song and then I used my mobile (OnePlus 6). On my mobile, I also installed the "Sony | Headphones Connect" application.

On my mobile, the audio quality was fantastic and I could feel the base correctly. But, when I used my Mac, it was totally out. The audio quality on Mac seemed to me to be using cheap headphones. (By the way, the built-in Mac speakers had better sound quality)

Any ideas?

How to embed YouTube videos as an audio player

I tried this tutorial to embed YouTube videos as an audio player. But your demo does not work on that site. I tried it on Android and Ubuntu Chrome. Any solution available?

Filter only specific frames using video and audio ffmpeg

Is it possible to use ffmpeg to, for example, take every second frame of a video (vid.mp4) and the corresponding audio bits for that frame and output them as .mp4?
ffmpeg -i vid.mp4 filter_complex "......." every2nd_vid.mp4
I would love to use frames without PTS format, etc. Inside the filters Interestingly, ffmpeg is very demanding in all videos, since it is perfect with timestamps and "quality" of pictures.

audio: host system sounds from a previous installation cannot be changed: incorrect file names cannot be updated in Android 9

I tried to change the sound for notification on my Samsung Galaxy S9 + (installed a year ago)
When I press the "name button" of the sound, a panel opens (see attached screen copy), which shows the name of the associated current sound file and a rotating wheel while the system is searching for the file.

The problem is that the file does not exist (it is not shown completely) because the name of the file shown is the full name on my previous phone (the name begins, includes – the name "four_digits-four_digit" associated with the SD card of My old phone card.

Nothing can be done except "cancel."

My conclusion (temporary?) Is that when you have changed the default ringtone and notification sounds then they are stored in a directory (external storage / 9999-9999 / android //. M4a), when Android resets the system settings for a New phone (S7e to S9 +):

  • File references are maintained (naturally, they are no longer valid, note: I found the file in a backup copy of my old SD card)
  • When you want to change the sound, the system searches for the file and cannot find it (naturally), no error is generated and the roulette continues to run until a time is canceled.

Therefore, it is currently impossible to change the sounds in Android 9, kernel version 4.9.59-17174122 if you have previously changed the sound files by default for a file stored in external storage.

Do you know a solution, Samsung proposes to restart the phone but this can not change anything because the same file name will be restored, not to restore your configuration is the solution that is left alone!

If I summarize, there are two questions:

  • The fact that when the system parameter is migrated from a phone to a new one, the file defined on the SD card is not verified (and follows a process "find it" if it is not found) – verifies the integrity in the installation
  • the fact that the sound update function does not verify the existence of the associated file and then does not propose to forget it or find it in another directory. – Verify the integrity in the execution and treat the error

My conclusion: until Google does not have to debug this, I must keep the same ringing and notification sound.

swift – Play audio and detect volumn stream in the microphone but in the application cache

I want to play audio and get volumn in the microphone in the work simulator, but I try to test on the device it doesn't work, the application cache in the game

init(url: URL) {
    engine = AVAudioEngine()
    player = AVAudioPlayerNode()
    player.volume = 1.0

    audioFile = try? AVAudioFile(forReading: url)
    songLengthSamples = audioFile.length

    let songFormat = audioFile.processingFormat
    sampleRateSong = Float(songFormat.sampleRate)
    lengthSongSeconds = Float(songLengthSamples) / sampleRateSong

    let buffer = AVAudioPCMBuffer(pcmFormat: audioFile!.processingFormat, frameCapacity: AVAudioFrameCount(audioFile!.length))
    do {
        try audioFile!.read(into: buffer!)
    } catch _ {

    pitch = AVAudioUnitTimePitch()
    pitch.pitch = 1
    pitch.rate = 1

    engine.connect(player, to: pitch, format: buffer?.format)
    engine.connect(pitch, to: engine.mainMixerNode, format: buffer?.format)
    player.scheduleBuffer(buffer!, at: nil, options: AVAudioPlayerNodeBufferOptions.loops, completionHandler: nil)

    let inputNode = engine.inputNode
    let recordingFormat = inputNode.outputFormat(forBus: 0)
    inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer, when) in
        print(self.getVolume(from: buffer, bufferSize: 1024))


    do {
        try engine.start()
        self.deletedTmpName(nameFile: "out.m4a")
    } catch _ {

private func getVolume(from buffer: AVAudioPCMBuffer, bufferSize: Int) -> Float {
    guard let channelData = buffer.floatChannelData?(0) else {
        return 0

    let channelDataArray = Array(UnsafeBufferPointer(start:channelData, count: bufferSize))

    var outEnvelope = (Float)()
    var envelopeState:Float = 0
    let envConstantAtk:Float = 0.16
    let envConstantDec:Float = 0.003

    for sample in channelDataArray {
        let rectified = abs(sample)

        if envelopeState < rectified {
            envelopeState += envConstantAtk * (rectified - envelopeState)
        } else {
            envelopeState += envConstantDec * (rectified - envelopeState)

    if let maxVolume = outEnvelope.max(),
        maxVolume > Float(0.015) {
        return maxVolume
    } else {
        return 0.0

I try to use the " ()" application

Error message " ()"

2020-02-11 11: 13: 03.334891 + 0700 PoCMusicTranspose (990: 319219) (avae)
AVAEInternal.h: 76 the required condition is false:
( (_engine-> IsRunning ()))

2020-02-11 11: 13: 03.338781 + 0700 PoCMusicTranspose (990: 319219) ***
Application termination due to an exception not detected
& # 39; & # 39 ;, reason: & # 39; the required condition is false:
_engine-> IsRunning () & # 39;

*** First launch call stack: (0x1ab376a48 0x1ab09dfa4 0x1ab278e88 0x1b7e6db8c 0x1b7e6dafc 0x1b7f0eeb8 0x1b7f0c87c 0x1004b4438
0x1004a65b0 0x1004a67e8 0x1af3fd9ac 0x1aee33fbc 0x1aee34320
0x1aee3333c 0x1af437050 0x1af438390 0x1af414a9c 0x1af48cc20
0x1af48f17c 0x1af487ff0 0x1ab2f4a00 0x1ab2f4958 0x1ab2f40f0
0x1ab2ef23c 0x1ab2eeadc 0x1b528f328 0x1af3fc63c 0x1004c8ff4
0x1ab178360) libc ++ abi.dylib: ends with the exception not captured from
type NSException (lldb)