TTS fixes and Readme Updates

[sauravpanda]

Update BrowserAI to v1.0.16

• Purpose:
  Update the BrowserAI library to the latest version and make related changes to the demo applications.
• Key Changes:
  • Upgrade BrowserAI dependency to version 1.0.16 in the audio-demo and tts-demo projects.
  • Update the audio model loading to use the 'webgpu' device for improved performance.
  • Change the TTS model used in the audio-demo from 'speecht5-tts' to 'kokoro-tts'.
  • Optimize the WASM runtime configuration for the ONNX backend, including disabling threading and adjusting WASM file paths.
• Impact:
  These changes should improve the overall performance and reliability of the demo applications by leveraging the latest BrowserAI features and optimizations.

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Original Description

None

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[kaizen-bot]

🔍 Code Review Summary

❗ Attention Required: This push has potential issues. 🚨

Overview

• Total Feedbacks: 2 (Critical: 2, Refinements: 0)
• Files Affected: 1
• Code Quality: [█████████████████░░░] 85% (Good)

🚨 Critical Issues

Performance (2 issues)

1. Disable threading for ONNX WASM runtime to avoid potential issues

---

📁 File: src/libs/transformers/backends/onnx.ts
🔍 Reasoning:
Disabling threading for the ONNX WASM runtime can help avoid potential issues and improve the overall stability of the application. Threading can sometimes introduce race conditions or other concurrency-related problems, especially in a browser environment where the runtime is less controlled.

💡 Solution:
Set ONNX_ENV.wasm.numThreads to 1 to disable threading for the ONNX WASM runtime.

Current Code:

['[LINE 158][UPDATED]   // Disable threading to avoid potential issues', '[LINE 159][UPDATED]   ONNX_ENV.wasm.numThreads = 1;']

Suggested Code:

['[LINE 158][UPDATED]   // Disable threading to avoid potential issues', '[LINE 159][UPDATED]   ONNX_ENV.wasm.numThreads = 1;']

2. Use self-hosted WASM files instead of remote CDN

---

📁 File: src/libs/transformers/backends/onnx.ts
🔍 Reasoning:
Using remote WASM files hosted on a CDN can introduce security risks, as the files could be tampered with or the CDN could be compromised. It's recommended to self-host the necessary WASM files to ensure the integrity and security of the application.

💡 Solution:
Update the ONNX_ENV.wasm.wasmPaths to use self-hosted WASM files instead of the remote CDN.

Current Code:

['[LINE 145][UPDATED]   ONNX_ENV.wasm.wasmPaths ={', '[LINE 146][UPDATED]     wasm: `https://cdn.jsdelivr.net/npm/@huggingface/transformers@${env.version}/dist/ort-wasm-simd-threaded.jsep.wasm`,', '[LINE 147][UPDATED]     mjs: `https://cdn.jsdelivr.net/npm/@huggingface/transformers@${env.version}/dist/ort-wasm-simd-threaded.jsep.mjs`,', '[LINE 148][UPDATED]};']

Suggested Code:

['[LINE 145][UPDATED]   ONNX_ENV.wasm.wasmPaths ={', '[LINE 146][UPDATED]     wasm: `./ort-wasm-simd-threaded.jsep.wasm`,', '[LINE 147][UPDATED]     mjs: `./ort-wasm-simd-threaded.jsep.mjs`,', '[LINE 148][UPDATED]};']

---

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