c# - Combine existing audio files and generate new audio file from them -

c# - Combine existing audio files and generate new audio file from them -

i have 2 sample wavfiles.

i combine them 1 output wav this:

play first wav, wait x seconds play 2nd wav, , save results new wav file.

i'm not particularly attached wav format, happy utilize if necessary.

from research looks need convert wavs pcm, , create new output buffer , write first file output buffer. somehow create space x seconds, , write sec pcm

how go doing this?

first of you'll need undestand talking about

wav type of riff encodes sound waves pcm.

essentially pcm means discrete values of wave stored @ sample rate (typically 44 khz)

each sample may contain info 1 or more channels (typically 2)

the values of each sample stored fixed size integer or float. (typically 16 bit integer)

these attributes stored in wav header

to combine 2 seperate wav files need read header of both files , if lucky have same byterate ( == samplerate * channel count * bits/sample / 8) need concat sec file minus header end of first, , add together length of sec 'length' field of first.

in other case advise utilize library reencoding of sort.

if have time , muse, recoding yourself.

if don't want bother stuff @ seek using finish programme (i.e. sox) need.

btw.: quiet 0 values if bits per sample signed , half of max value if unsigned (typically found in 8 bit integers).

so 4 seconds of quiet need have n = 4 * sample rate * channel num * (bits / seconds) / 8 times 0

trivia: utilize constant value instead of 0 silence

c# audio