Technical Guides

Voice Generation API Integration

// Initialize the API client
const client = new VoiceAPI({
    apiKey: process.env.API_KEY,
    baseURL: 'https://api.provider.com/v1'
});

try {
    const audio = await generateSpeech(text);
    return audio;
} catch (error) {
    if (error.response?.status === 429) {
        // Handle rate limiting
        await delay(1000);
        return generateSpeech(text);
    }
    throw new Error(`Speech generation failed: ${error.message}`);
}

Voice Processing and Optimization

const convertAudio = async (buffer, format) => {
    const ffmpeg = require('fluent-ffmpeg');
    return new Promise((resolve, reject) => {
        ffmpeg()
            .input(buffer)
            .toFormat(format)
            .on('end', resolve)
            .on('error', reject)
            .save('output.' + format);
    });
};

API Key Management

• Store API keys in environment variables
• Use key rotation for production environments
• Implement API key access controls
• Monitor API key usage and set alerts

Rate Limiting and Quotas

class RateLimiter {
    constructor(maxRequests, timeWindow) {
        this.maxRequests = maxRequests;
        this.timeWindow = timeWindow;
        this.requests = [];
    }

    async checkLimit() {
        const now = Date.now();
        this.requests = this.requests.filter(
            time => now - time < this.timeWindow
        );
        
        if (this.requests.length >= this.maxRequests) {
            throw new Error('Rate limit exceeded');
        }
        
        this.requests.push(now);
        return true;
    }
}

Caching Strategies

const cache = new Map();

async function getCachedAudio(text, options) {
    const key = `${text}-${JSON.stringify(options)}`;
    
    if (cache.has(key)) {
        return cache.get(key);
    }

    const audio = await generateSpeech(text, options);
    cache.set(key, audio);
    return audio;
}

Batch Processing

async function batchProcess(texts, concurrency = 3) {
    const results = [];
    for (let i = 0; i < texts.length; i += concurrency) {
        const batch = texts.slice(i, i + concurrency);
        const promises = batch.map(text => generateSpeech(text));
        results.push(...await Promise.all(promises));
    }
    return results;
}