First experiments with sound - Revision history

Nmingott: added sections

2025-05-12T21:06:55Z

added sections

← Older revision		Revision as of 21:06, 12 May 2025
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	===== TODO. Play a melody with note names in Italian: Do, Re, Mi ... =====		===== TODO. Play a melody with note names in Italian: Do, Re, Mi ... =====
			xxxxx Should be easy.
⚫	~~TODO.~~ ~~Link~~ to the interesting story of ~~this~~ ~~topic~~

		⚫	xxxxx link to the interesting story of the two different note names
	TODO.

			===== TODO. Realtime sound. on envent play a sound as soon as possible =====
			This is necessary to simulate instruments playing on a computer keyboard or on some other external harware device. It is important that the delay is small otherwise the effect will be not realistic and not fun. At the moment i don't know how to do it.

	===== Create a *.wav file =====		===== Create a *.wav file =====

Nmingott at 21:03, 12 May 2025

2025-05-12T21:03:20Z

← Older revision		Revision as of 21:03, 12 May 2025
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	'''Exercise.1'''. Check that the class '''Sound''' isn't present in Cuis by default.		'''Exercise.1'''. Check that the class '''Sound''' isn't present in Cuis by default.

			===== References =====

			* xxxx
			* xxxx

Nmingott: inserted some material to catalog in a later phase

2025-05-06T06:53:09Z

inserted some material to catalog in a later phase

New page

These notes were started from hhzl observations [https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev/issues/82 here].

The sound system was exported from Squeak, more information can be found in the Swiki, see [[squeak:152|[1]]] and [[squeak:152|[2]]].

The sound system isn't loaded in the Cuis base system, but it is included in it, you just need to load it with:<syntaxhighlight lang="smalltalk">
Feature require: 'Sound'.

</syntaxhighlight>

===== Play a melody writing note names and duration =====
<syntaxhighlight lang="smalltalk">
(AbstractSound noteSequenceOn:
PluckedSound default from:
#((c4 1 500)
(d4 1 500)
(e4 1 500)
(g4 1 500)
(a4 1 250)
(a4 1 250)
(c5 1 500)
)
) play

</syntaxhighlight>

===== TODO. Play a melody with note names in Italian: Do, Re, Mi ... =====
TODO. Link to the interesting story of this topic

TODO.

===== Create a *.wav file =====
<syntaxhighlight lang="smalltalk">
(AbstractSound noteSequenceOn: FMSound flute2 from: #(
(e5 0.5 500) (d5 0.5 300) (c5 0.5 350)
(d5 0.5 300) (e5 0.5 500) (e5 0.5 300)
(e5 1.0 350) (d5 0.5 400) (d5 0.5 300)
(d5 1.0 330) (e5 0.5 400) (g5 0.5 300)
(g5 1.0 500)
)) storeWAVOnFileNamed: 'maryhadalittlelamb.wav'.

</syntaxhighlight>

===== Play a *.wav file =====
<syntaxhighlight lang="smalltalk">
(SampledSound fromWaveFileNamed: 'maryhadalittlelamb.wav') play
</syntaxhighlight>

'''Exercise.1'''. Check that the class '''Sound''' isn't present in Cuis by default.