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By tag: audio

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Controlling the Wave Device Volume  (Unpublished)

The wave device volume determines how loudly sounds are played, either for the current application or for the entire operating system. This volume can be adjusted for the left and right channels independently using Windows API functions.


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Console and multithreaded recording and playback  (Unpublished)

How to use RecorderEx and PlayerEx in console application or Windows Service? In order to use RecorderEx and PlayerEx in a console application or Windows Service need to create instances of these classes by using a parameterized constructor: new RecorderEx(true) and new PlayerEx(true), respecti...


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Vox audio file format  (Unpublished)

Question: I found that your vox converter doesn't handle vox files from the Orator phone dictation system right. Answer: There are so many questions about Vox format. What is the Vox format? Vox audio file format is a headerless audio format data, which generally contains Dialogic_ADPCM, but may ...


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Removes DC offset  (Unpublished)

DC offset is an offsetting of a signal from zero. It occurs when hardware, such as a sound card, adds DC offset to the recorded audio signal. DC offset is shift of the red line comparatively to the black one on figure below...


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Converts Mp3 Joint Stereo to mono  (Unpublished)

Question: Have you got any issues with "Joint-Stereo" MP3's? I have a customer who sends me the attached MP3 and when I convert it to a mono format, it effectively cancels out the audio. Answer: The problem is that in Mp3 Joint Stereo sound file mirror is opposite...


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Resampling and noise  (Unpublished)

Very often we have to change the sampling rate, number of channels and the size of a sample when converting from one format to another. You can use AudioCompression.Convert method for these purposes. Unfortunately, for the uncompressed PCM -> PCM this leads to a significant reduction in sound qua...


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Alvas.Audio Readers.  (Unpublished)

Audio Readers is a hierarchy of Alvas.Audio classes that implement IAudioReader interface used to read format and audio data. AudioReader is a base class for the readers that can read an audio data from the stream. This class is abstract. AuReader class reads an audio data from the .AU and .SND st...


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Asp.Net Audio Converter  (Unpublished)

Converts audio files with Alvas.Audio in Asp.Net application as easy as in Windows Forms, WPF, Windows Service and Console Apps. You need Upload audio file. Select your audio file from list on the server. Select audio format from list with available audio formats. Press “Convert” button and down...


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Alvas.Audio and WPF  (Unpublished)

For using Windows Forms controls in Windows Presentation Foundation(WPF) application needs: Add reference to WindowsFormsIntegration assembly (in WindowsFormsIntegration.dll) to your project. Add reference to System.Windows.Forms assembly (in System.Windows.Forms.dll) to your project. In the Wind...


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Alvas.Audio now supports x64 mode on 64-bit operating systems.  (Unpublished)

Alvas.Audio 8.1 version has been published. New features: Supports x64 mode on 64-bit operating systems. WaveformVisualizer draws picture of the sound amplitude-time representation (Waveform). Removes DC offset. DC offset is an offsetting of a signal from zero. Occurs when hardware, such as a ...


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Alvas.Audio new 7.7 version has been published.  (Unpublished)

New features: Support audio filters such as Chorus, Compressor, Distortion, Echo, Flanger, Gargle, I3DL2Reverb, ParamEq, WavesReverb. Helper for converting Mp3 file to Wav file with PCM (Pulse-code modulation) data Helper for decoding audio data in PCM (Pulse-code modulation). Helper for decodin...


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Alvas.Audio 7.1 has been published.  (Unpublished)

Whats new (version 7.1): Writes ID3 tag version 1 from MPEG Layer3 streams. Writes INFO metadata(similar mp3 tags) from Wave streams. Checks audio signal silence...


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Communicate with aliens on IronPython (ending)  (Unpublished)

Previously, we are talking with aliens in C#, Nemerle, Boo and F#. Now let's try to do the same on IronPython. See code below...


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How can be one audio file mixed to another in VB.Net?  (Unpublished)

Visual Basic .Net example for mixing one audio file to another...


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Communicate with aliens on F# (continued)  (Unpublished)

Previously, we are talking with aliens in C#, Nemerle and Boo. Now let's try to do the same on F#. See code below...


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