ตัวแปลงไฟล์ออนไลน์ฟรี GSM เป็น HTK

GSM 06.10 Lossy Speech Compression. A lossy format for compressing speech which is used in the Global Standard for Mobile telecommunications (GSM). It’s good for its purpose, shrinking audio data size, but it will introduce lots of noise when a given audio signal is encoded and decoded multiple times. This format is used by some voice mail applications. It is rather CPU intensive.

Single channel 16-bit PCM format used by HTK, a toolkit for building Hidden Markov Model speech processing tools