is it possible to convert .nmf audio file to .wav format

Question

Can audio files in "nmf" format be converted to "wav" format? If so, what is the appropriate tool to do so?

If it cannot be converted, then what is the workaround?

Some sites on the net say that nmf files cannot be converted to other formats. Some claim that they have tools to convert.

Our client has audio files in nmf format. We would get access to them only when we go to their site physically. But before we get there, we want to be sure that we can convert their nmf files to wav files as our software expects only files in wav format.

It would be helpful if we can get some sample nmf files from somewhere or if we can generate nmf audio files ourselves so that we can test the conversion tool before we go the client site.

Any suggestion most welcome.

Solution

Presumably you're dealing with the sort of data produced by the NICE Audio and Call Recording software (http://www.nice.com/audio/call-recording-loggers). From that page:

NICE Recording highlights: ... Highest Security Levels enabled by: AES Rijndael 256-bit encryption; MD5 fingerprinting; strict user access profiles; strong passwords policies; maker/Checker profiles; OS hardening policy ...

Note that encryption is likely to be present, so that's presumably what will be part of the outer container format.

There is a supposedly a player for it, so you should be able to record its output (assuming it doesn't offer an export function). You'll want a Windows version of https://stackoverflow.com/questions/18443621/mac-os-x-virtual-audio-driver, I guess, or of Soundflower. that would allow you to capture the decoded waveform, and then capture that is a PCM file of such, and then compress it as per your preference. Its recorded voice, so your loss budget is (probably) going to be fine with the lossiness.

Comments

[Cameron Kerr]

Get a trial version of the recorder?

[Colin Pickard]

I was told there is no trial version available.