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Full Discussion: Applescript application call problem...
Operating Systems OS X (Apple) Applescript application call problem... Post 302915550 by wisecracker on Wednesday 3rd of September 2014 05:21:37 PM
Old 09-03-2014
Applescript application call problem...
Hi all...

I am trying to create a shell project purely for this Macbook Pro.
I do NOT want to use SOX as the sampling _source_ but Quicktime
instead, the idea being that NO third party installs will be needed.

The code below works fine except the commented out Applescript line
does not do what it says on the tin...

I want to sample 1 second snatches of a signal without the small audio
recording image appearing on screen. In other words a pseudo-embedded
mode...

Does anyone know if or how this can be done?
If not then I can live with it during each snatch...

Ignore the lines below the asterisks they are for my test purposes only
and be aware of wordwrapping...

Any help would be greatly appreciated...

TIA.
Code:
#!/bin/bash
# qt.sh
cd /Users/barrywalker/Desktop/Audio
rm *.aifc >/dev/null 2>&1
sample()
{
osascript << APPLESCRIPT
	tell application "QuickTime Player"
		# set visible of process "QuickTime Player" to false
		set sample to (new audio recording)
		tell sample
			delay 1.5
			start
			delay 1.5
			stop
		end tell
		quit
	end tell
APPLESCRIPT
wait
}
sample
# *********************************************************
afconvert -f 'WAVE' -c 1 -d UI8@8000 "/Users/barrywalker/Desktop/Audio/Audio Recording.aifc" waveform.wav
ls -l waveform.wav
afplay -d waveform.wav
dd if=waveform.wav of=waveform.raw skip=4096 bs=1 count=8000
/Users/barrywalker/Downloads/sox-14.4.0/play -v 0.5 -r 8000 -b 8 -c 1 -e unsigned-integer /Users/barrywalker/Desktop/Audio/waveform.raw

Last edited by wisecracker; 09-04-2014 at 03:28 AM.. Reason: Now solved...
 

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LEARN ABOUT CENTOS

afgetdataoffset

AFGETFRAMECOUNT(3)														AFGETFRAMECOUNT(3)

NAME

       afGetFrameCount, afGetTrackBytes, afGetDataOffset - get the total sample frame count, length of audio track in bytes, offset of the audio
       track for a track in an audio file

SYNOPSIS

       #include <audiofile.h>

       AFframecount afGetFrameCount (AFfilehandle file, int track);

       AFfileoffset afGetTrackBytes (AFfilehandle file, int track);

       AFfileoffset afGetDataOffset (AFfilehandle file, int track);

PARAMETERS

       file is an audio file handle created by a previous call to afOpenFile(3).

       track is an integer which specifies an audio track within file. All supported file formats contain exactly one audio track per file, so the
       constant AF_DEFAULT_TRACK should always be used.

DESCRIPTION

       afGetFrameCount returns the total number of sample frames contained within the specified track of the specified file.

       Each sample frame of audio consists of a fixed number of samples (equal to the number of audio channels in the track. For monaural data, a
       sample frame consists of one audio sample. For stereophonic data, a sample frame consists of a stereo pair.

       afGetTrackBytes returns the total number of bytes of raw audio data (i.e., prior to decompression or conversion) in the track.

       afGetDataOffset returns the offset in bytes of the start of the audio data contained within the specified track of the specified file.

RETURN VALUE

       afGetFrameCount returns the total number of sample frames in track.

       afGetTrackBytes returns the total number of bytes of audio data in track.

       afGetDataOffset returns the offset in bytes to the beginning of the audio data in track.

       Each of these routines returns -1 in case of error.

AUTHOR

       Michael Pruett <michael@68k.org>

Audio File Library 0.3.6					    03/06/2013							AFGETFRAMECOUNT(3)
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