diff --git a/HISTORY.md b/HISTORY.md index 3490e399..52f05843 100755 --- a/HISTORY.md +++ b/HISTORY.md @@ -32,6 +32,7 @@ ### 2019-01-24 * Turkish translation update, thanks, Turgut! +* updated audio-comp library blocks with new loop-arrow symbols ### 2019-01-23 * Objects, Threads: new blocks for setting and changing the stage's background color diff --git a/libraries/audioComp_module.xml b/libraries/audioComp_module.xml index 83dd9471..2e58b5bb 100644 --- a/libraries/audioComp_module.xml +++ b/libraries/audioComp_module.xml @@ -1,18 +1 @@ -
durationname -duration -length -number of channels -sample rate -samplessamplessoundvar base64, binaryString, len, bytes, i, arrayBuffer, audioCtx; if (sound.audioBuffer) { return; } base64 = sound.audio.src.split(',')[1]; binaryString = window.atob(base64); len = binaryString.length; bytes = new Uint8Array(len); for (i = 0; i < len; i += 1) { bytes[i] = binaryString.charCodeAt(i); } arrayBuffer = bytes.buffer; Note.prototype.setupContext(); audioCtx = Note.prototype.audioContext; audioCtx.decodeAudioData(arrayBuffer, function(buffer) { sound.audioBuffer = buffer; });soundreturn !isNil(sound.audioBuffer);soundchoiceswitch (choice) { case 'sample rate': return sound.audioBuffer.sampleRate; case 'duration': return sound.audioBuffer.duration; case 'length': return sound.audioBuffer.length; case 'number of channels': return sound.audioBuffer.numberOfChannels; default: return sound.audioBuffer; }
play back a sound, a list of samples (single channel), or a list of lists (multiple channels) at the given sample rate. for demo purposes this block also fast-plots the samples on the stage
4410022.05 kHz=22050 -44.1 kHz=44100 -88.2 kHz=88200 -96 kHz=96000samplesratevar audioCtx, channels, frameCount, arrayBuffer, i, source; Note.prototype.setupContext(); audioCtx = Note.prototype.audioContext; channels = (samples.at(1) instanceof List) ? samples.length() : 1; frameCount = (channels === 1) ? samples.length() : samples.at(1).length(); arrayBuffer = audioCtx.createBuffer(channels, frameCount, rate); if (!arrayBuffer.copyToChannel) { arrayBuffer.copyToChannel = function (src, channel) { var buffer = this.getChannelData(channel); for (i = 0; i < src.length; i += 1) { buffer[i] = src[i]; } } } if (channels === 1) { arrayBuffer.copyToChannel(Float32Array.from(samples.asArray()), 0, 0); } else { for (i = 0; i < channels; i += 1) { arrayBuffer.copyToChannel(Float32Array.from(samples.at(i + 1).asArray()), i, 0); } } source = audioCtx.createBufferSource(); source.buffer = arrayBuffer; source.connect(audioCtx.destination); source.start(); source.pause = source.stop; this.parentThatIsA(StageMorph).activeSounds.push(source);generate a list of samples representing a sine wave at the given frequency, duration and sample rate
440a 55=55 -a 110=110 -a 220=220 -a 440=440 -a 880=880 -a 1760=1760 -a 3520=352014410022.05 kHz=22050 -44.1 kHz=44100 -88.2 kHz=88200 -96 kHz=96000
0.5
1
quickly plot the samples of a sound, a list of samples (single channel), or a list of lists (multiple channels) to the stage at a lower resolution.
1offset-2
records an audio snippet and reports it as a new sound, or zero if the user cancels
ca:volum del so es:volumen del sonido return typeof meter != 'undefined'return Math.floor(meter.volume * 100); \ No newline at end of file +
durationname duration length number of channels sample rate samplessamplessoundvar base64, binaryString, len, bytes, i, arrayBuffer, audioCtx; if (sound.audioBuffer) { return; } base64 = sound.audio.src.split(',')[1]; binaryString = window.atob(base64); len = binaryString.length; bytes = new Uint8Array(len); for (i = 0; i < len; i += 1) { bytes[i] = binaryString.charCodeAt(i); } arrayBuffer = bytes.buffer; Note.prototype.setupContext(); audioCtx = Note.prototype.audioContext; audioCtx.decodeAudioData(arrayBuffer, function(buffer) { sound.audioBuffer = buffer; });soundreturn !isNil(sound.audioBuffer);soundchoiceswitch (choice) { case 'sample rate': return sound.audioBuffer.sampleRate; case 'duration': return sound.audioBuffer.duration; case 'length': return sound.audioBuffer.length; case 'number of channels': return sound.audioBuffer.numberOfChannels; default: return sound.audioBuffer; }
play back a sound, a list of samples (single channel), or a list of lists (multiple channels) at the given sample rate. for demo purposes this block also fast-plots the samples on the stage
4410022.05 kHz=22050 44.1 kHz=44100 88.2 kHz=88200 96 kHz=96000samplesratevar audioCtx, channels, frameCount, arrayBuffer, i, source; Note.prototype.setupContext(); audioCtx = Note.prototype.audioContext; channels = (samples.at(1) instanceof List) ? samples.length() : 1; frameCount = (channels === 1) ? samples.length() : samples.at(1).length(); arrayBuffer = audioCtx.createBuffer(channels, frameCount, rate); if (!arrayBuffer.copyToChannel) { arrayBuffer.copyToChannel = function (src, channel) { var buffer = this.getChannelData(channel); for (i = 0; i < src.length; i += 1) { buffer[i] = src[i]; } } } if (channels === 1) { arrayBuffer.copyToChannel(Float32Array.from(samples.asArray()), 0, 0); } else { for (i = 0; i < channels; i += 1) { arrayBuffer.copyToChannel(Float32Array.from(samples.at(i + 1).asArray()), i, 0); } } source = audioCtx.createBufferSource(); source.buffer = arrayBuffer; source.connect(audioCtx.destination); source.start(); source.pause = source.stop; this.parentThatIsA(StageMorph).activeSounds.push(source);generate a list of samples representing a sine wave at the given frequency, duration and sample rate
440a 55=55 a 110=110 a 220=220 a 440=440 a 880=880 a 1760=1760 a 3520=352014410022.05 kHz=22050 44.1 kHz=44100 88.2 kHz=88200 96 kHz=96000
0.5
1
quickly plot the samples of a sound, a list of samples (single channel), or a list of lists (multiple channels) to the stage at a lower resolution.
1offset-2
records an audio snippet and reports it as a new sound, or zero if the user cancels
ca:volum del so es:volumen del sonido return typeof meter != 'undefined'return Math.floor(meter.volume * 100); \ No newline at end of file