[Hackrf-dev] playing back osmocom_fft cfiles

[Brent Thorne]

Thanks Mike!  Just what the doctor ordered.

On Mon, Mar 28, 2016 at 5:30 PM, Mike Walters <mike at flomp.net> wrote:
> The HackRF format uses interleaved 8-bit signed integers and the cfile
> format (from osmocom_fft, GNURadio, etc.) uses interleaved 32-bit floating
> point numbers.
> By 'interleaved' I mean that it's just I, Q, I, Q, etc.
>
> A quick and easy way I use to convert between them on the command-line is to
> use sox:
>
> sox -t f32 osmocom_fft_recording.cfile -t s8 hackrf_transfer_recording.cs8
>
> (to convert from a cfile recorded with osmocom_fft to a file you could
> replay with hackrf_transfer)
>
> On 29 March 2016 at 00:55, Brent Thorne <brentathorne at gmail.com> wrote:
>>
>> Hi all,
>>
>> I'd like to be able to playback files captured in osmocom_fft.
>> Initially I was thinking I could use hackrf_transfer, but the file
>> format appear to be different.  Can anyone help me understand the
>> differenced between the two file formats, osmocom_fft cfiles and
>> hackrf_transfer files?   I think the hackrf output format is two
>> bytes, or I and Q data.  Is that correct?  Not sure what format the
>> osmocom tools outputs, gnuradio?
>>
>> Maybe a transcoder tool already exist or there is a better way to
>> playback files captured with osmocom_fft or gnuradio.  I can capture
>> and playback files with hackrf_transfer, but often want visualize,
>> annotate and playback a select part of the capture.  Is there a better
>> way to do this.
>>
>> Best,
>>
>> Brent
>> _______________________________________________
>> HackRF-dev mailing list
>> HackRF-dev at greatscottgadgets.com
>> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
>
>