1. Global Market Size: Analyze the overall size of the global audio market, including sub sectors such as home audio, professional audio (such as audio equipment used in performances, conferences, cinemas, etc.), and car audio.
2. Regional distribution: Investigate the market size and growth of different regions, such as North America, Europe, Asia (especially China, Japan, South Korea), South America, and Africa.
3. Growth trend: Analyze historical data, predict market growth rates for the next few years, and understand whether the market is in a growth, maturity, or decline period.