I have an audio recording that was acquired in SEV format via a TDT neurophsyiology system. Following acquisition, I used a custom Python script to convert the SEV file to WAV file format. This WAV file appears to have been created correctly as it sounds normal when I listen to it in iTunes. However, when I try to load it into ELAN 5.0.0 for annotation, the waveform viewer says it is an “unsupported compression type for Wave file”. It has a sample rate of 24.414 kHz, bit rate of 781 kbps, sample size 32 bit. Has anyone encountered this problem before? How might this be solved? Thanks!
This message is shown if the detected compression type of the wave file is anything else than PCM/uncompressed or a-law. Unfortunately the message doesn’t say which compression type has been detected (we’ll change that).
So, to see the waveform it seems you have to convert the wave file to e.g. uncompressed (e.g. with Audacity).
-Han
I have this problem when I use audio files which have for different reasons bit depth different from 16 (for example 24 etc). I usually fix this with sox command:
sox old_file.wav -b 16 new_file.wav
This may be the fastest way to do the conversion, so I just wanted to share the tip.
Thank you for your help! The sox old_file.wav -b 16 new_file.wav command worked.
well，the easiest way is converting wav to other formats such as m4a, mp3, aac, ogg…here is a guide maybe helpful:http://www.videoconverterfactory.com/tips/m4a-to-wav.html good luck man