[WIP] Optimize audio transcription data handling

[Copilot]

Cloud agent has begun work on sdk/js/src/openai/li... and will update this pull request as work progresses.

Original prompt

sdk/js/src/openai/liveAudioTranscriptionClient.ts
Comment on lines +252 to +255
const copy = new Uint8Array(pcmData.length);
copy.set(pcmData);

    await this.pushQueue!.write(copy);

Copilot AI
29 minutes ago
append() copies pcmData into a new Uint8Array, and executeCommandWithBinary() then copies again via Buffer.from(binaryData). For high-frequency mic chunks this double-copy can be costly; consider queueing a Buffer/ArrayBuffer slice directly or changing executeCommandWithBinary() to avoid the extra copy.

Suggested change
const copy = new Uint8Array(pcmData.length);
copy.set(pcmData);
await this.pushQueue!.write(copy);
await this.pushQueue!.write(pcmData);

    is this a legit recommend ?

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Project	Deployment	Actions	Updated (UTC)
foundry-local	Ready	Preview, Comment	Apr 1, 2026 5:39am

[rui-ren]

@copilot sdk/js/src/openai/liveAudioTranscriptionClient.ts
Comment on lines +252 to +255
const copy = new Uint8Array(pcmData.length);
copy.set(pcmData);

Copilot AI
29 minutes ago
append() copies pcmData into a new Uint8Array, and executeCommandWithBinary() then copies again via Buffer.from(binaryData). For high-frequency mic chunks this double-copy can be costly; consider queueing a Buffer/ArrayBuffer slice directly or changing executeCommandWithBinary() to avoid the extra copy.

Suggested change
const copy = new Uint8Array(pcmData.length);
copy.set(pcmData);
await this.pushQueue!.write(copy);
await this.pushQueue!.write(pcmData);