wav

Is there a simple, direct way to play a WAV file from Haskell using some library and possibly such that I play many sounds at once? I'm aware of OpenAL but I'm not writing some advanced audio synthesis program, I just want to play some sounds for a little play thing. Ideally the API might be something like: readWavFile :: FilePath -> IO Wave playWave :: Wave -> IO () playWaveNonBlocking :: Wave -> IO () I'm this close to merely launching mplayer or something. Or trying to cat the wav directly to /dev/snd/ or somesuch. This is how to play multiple sounds on multiple channels at once with SDL. I

Is there a component or code that allows the following: Record a spoken word (or words) and save it/them to a file that can be played back. The file must be able to be played back on XP, Vista and Windows 7. The file can be either stand alone or saved to a datasource. [Using Delphi 7 for creating apps on XP and using Absolute Database.] The functions in MMSystem.pas let you do this using Windows API. You can either use high-level functions such as the MCI functions and PlaySound , or low-level functions such as waveInOpen , waveInPrepareHeader , waveInProc etc. If you want high control, you

I am using ffmpeg to convert amr to wav and wav to amr.Its successfully converting amr to wav but not viceversa. As ffmpeg is supporting amr encoder decoder, its giving error. ffmpeg -i testwav.wav audio.amr Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height You can try setting the sample rate and bit rate. Amr supports only 8000Hz sample rate and 4.75k, 5.15k, 5.9k, 6.7k, 7.4k, 7.95k, 10.2k or 12.2k bit rates: ffmpeg -i testwav.wav -ar 8000 -ab 12.2k audio.amr 来源： https://stackoverflow.com/questions/2559746/getting-error

As an excuse to learn C#, I have been trying to code a simple project: creating audio files. To start, I want to make sure that I can write files that meet the WAVE format. I have researched the format online (for example, here ), but whenever I try to play back a file, it won't open correctly. Here is my code. Is something missing or incorrect? uint numsamples = 44100; ushort numchannels = 1; ushort samplelength = 1; // in bytes uint samplerate = 22050; FileStream f = new FileStream("a.wav", FileMode.Create); BinaryWriter wr = new BinaryWriter(f); wr.Write("RIFF"); wr.Write(36 + numsamples *

I need to get the length of a .wav file. Using: sox output.wav -n stat Gives: Samples read: 449718 Length (seconds): 28.107375 Scaled by: 2147483647.0 Maximum amplitude: 0.999969 Minimum amplitude: -0.999969 Midline amplitude: 0.000000 Mean norm: 0.145530 Mean amplitude: 0.000291 RMS amplitude: 0.249847 Maximum delta: 1.316925 Minimum delta: 0.000000 Mean delta: 0.033336 RMS delta: 0.064767 Rough frequency: 660 Volume adjustment: 1.000 How do I use grep or some other method to only output the value of the length in the second column, i.e. 28.107375? Thanks phihag The stat effect sends its

I'm trying to print out an wave from a wav file, but I'm kinda lost on how the length I should take for an sample. this is what I would love to archieve (without the colors): so for reading in my data I use the following code: // first we need to read our wav file, so we can get our info: byte[] wav = File.ReadAllBytes(filename); // then we are going to get our file's info info.NumChannnels = wav[22]; info.SampleRate = bytesToInt(wav[24], wav[25]); // nr of samples is the length - the 44 bytes that where needed for the offset int samples = (wav.Length - 44) / 2; // if there are 2 channels, we