Granular synthesis - Revision history

Michael Murtaugh at 15:57, 14 October 2014

2014-10-14T15:57:21Z

← Older revision		Revision as of 17:57, 14 October 2014
Line 39:		Line 39:
	<source lang="bash">		<source lang="bash">
	sox input.aiff -t raw -e unsigned-integer -r 44100 -c 1 - \| python filtersamples.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -		sox input.aiff -t raw -e unsigned-integer -r 44100 -c 1 - \| python filtersamples.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -
			</source>

			== Live Audio Pipeline ==
			<source lang="bash">
			rec -t raw -e unsigned-integer -r 44100 -c 1 - \| python filtersamples.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -
	</source>		</source>

2014-10-14T11:38:24Z

← Older revision		Revision as of 13:38, 14 October 2014
Line 1:		Line 1:
	The technique of producing new sound waves with microsecond samples is generally termed [http://en.wikipedia.org/wiki/Granular_synthesis granular synthesis].		The technique of producing new sound waves with microsecond samples is generally termed [http://en.wikipedia.org/wiki/Granular_synthesis granular synthesis].

	[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales. The following [[python]] script can be used as a filter with say [[sox]] to ~~process~~ the samples of an audio file and play it in real time.		[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales. The following [[python]] script can be used as a filter with say [[sox]] to filter the samples of an audio file and play it back in real time.

	'''filtersamples.py'''		'''filtersamples.py'''

2014-10-14T11:38:02Z

← Older revision		Revision as of 13:38, 14 October 2014
Line 1:		Line 1:
	The technique of producing new sound waves with microsecond samples is generally termed [http://en.wikipedia.org/wiki/Granular_synthesis granular synthesis].		The technique of producing new sound waves with microsecond samples is generally termed [http://en.wikipedia.org/wiki/Granular_synthesis granular synthesis].

	[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales.		[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales. The following [[python]] script can be used as a filter with say [[sox]] to process the samples of an audio file and play it in real time.

	'''filtersamples.py'''		'''filtersamples.py'''

2014-10-14T10:55:32Z

← Older revision		Revision as of 12:55, 14 October 2014
Line 3:		Line 3:
	[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales.		[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales.

	'''~~samplebits~~.py'''		'''filtersamples.py'''
	<source lang="python">		<source lang="python">
	import sys, struct		import sys, struct
Line 38:		Line 38:

	<source lang="bash">		<source lang="bash">
	sox input.aiff -t raw -e unsigned-integer -r 44100 -c 1 - \| python ~~samplebits~~.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -		sox input.aiff -t raw -e unsigned-integer -r 44100 -c 1 - \| python filtersamples.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -
	</source>		</source>

2014-10-14T10:54:38Z

← Older revision		Revision as of 12:54, 14 October 2014
Line 38:		Line 38:

	<source lang="bash">		<source lang="bash">
	sox ~~1.0000001~~.aiff -t raw -e unsigned-integer -r 44100 -c 1 - \| python samplebits.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -		sox input.aiff -t raw -e unsigned-integer -r 44100 -c 1 - \| python samplebits.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -
	</source>		</source>

2014-10-14T10:47:40Z

← Older revision		Revision as of 12:47, 14 October 2014
Line 1:		Line 1:
	The technique of producing new sound waves with microsecond samples is generally termed granular synthesis.		The technique of producing new sound waves with microsecond samples is generally termed [http://en.wikipedia.org/wiki/Granular_synthesis granular synthesis].

	[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales.		[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales.

2014-10-14T10:30:07Z

← Older revision		Revision as of 12:30, 14 October 2014
Line 1:		Line 1:
	[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time.		The technique of producing new sound waves with microsecond samples is generally termed granular synthesis.

			[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time, exploring how the audio can be treated in a way that works at the given time scales.

	'''samplebits.py'''		'''samplebits.py'''

2014-10-14T10:27:56Z

← Older revision		Revision as of 12:27, 14 October 2014
Line 1:		Line 1:
	[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time.		[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time.

	samplebits.py		'''samplebits.py'''
	<source lang="python">		<source lang="python">
	import sys, struct		import sys, struct
Line 33:		Line 33:
	</source>		</source>

	~~2raw~~.sh		And the command to play the audio through the python script, starts from an input audio, pipes the (raw) bytes through the python script, and finally piped back to sox's play command to play. Note the matching options to be able to in and out of a raw format.
	~~<source lang="bash">~~
	~~#!/bin/bash~~
	~~sox $1 -t~~ raw ~~-e unsigned-integer -r 44100 -c 1 -~~
	~~</source>~~

	~~play pipeline~~
	<source lang="bash">		<source lang="bash">
	~~./2raw.sh~~ 1.0000001.aiff \| python samplebits.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -		sox 1.0000001.aiff -t raw -e unsigned-integer -r 44100 -c 1 - \| python samplebits.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -
	</source>		</source>

2014-10-14T10:23:31Z

← Older revision		Revision as of 12:23, 14 October 2014
Line 37:		Line 37:
	#!/bin/bash		#!/bin/bash
	sox $1 -t raw -e unsigned-integer -r 44100 -c 1 -		sox $1 -t raw -e unsigned-integer -r 44100 -c 1 -
			</source>

			play pipeline
			<source lang="bash">
			./2raw.sh 1.0000001.aiff \| python samplebits.py \| play -t raw -e unsigned-integer -r 44100 -c 1 -b 16 -
	</source>		</source>

2014-10-14T10:22:47Z

← Older revision		Revision as of 12:22, 14 October 2014
Line 1:		Line 1:
	[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time.		[[User:Max_Dovey \| Max Dovey]] is working on manipulating audio recordings about the limits of time.

			samplebits.py
	<source lang="python">		<source lang="python">

	import sys, struct		import sys, struct

Line 31:		Line 31:
	out = struct.pack("H"numsamples, samples)		out = struct.pack("H"numsamples, samples)
	sys.stdout.write(out)		sys.stdout.write(out)
			</source>

			2raw.sh
			<source lang="bash">
			#!/bin/bash
			sox $1 -t raw -e unsigned-integer -r 44100 -c 1 -
	</source>		</source>