Is it possible to send binary data (using Serial.write) to achieve better performance and feed more data with the same baud rate?

[Inversion-des]

If we calculate, what the baud rate needed if we send audio samples data at 10kHz from 12-bit analog pin using Serial.println on Windows:

• Each sample will convert into 4 digits + 2 characters (\r\n) = 6 characters total = 6 bytes * 8 = 48 bits.
• 10'000 samples/second × (48 bits + 2 (start and end)/sample) = 500'000 bits/second (needed baud rate).
  As we can see, the value is huge here…

With raw data it could be: 10'000 * (12+2) = 140'000 bits/second (baud rate)