Howtosignalprocessing
- How do you check if a FLAC is really a FLAC?
- How do I know if my FLAC is upscaled?
- How do I check audio quality?
How do you check if a FLAC is really a FLAC?
A good and popular choice for this is Spek (http://spek.cc), which is available for Windows, Linux and macOS. When we open a file in Spek, we will see a spectrum display of the entire file. Depending on the frequency at which it cuts off, we can determine the bitrate.
How do I know if my FLAC is upscaled?
Run an SHA fingerprint on the file. Compress with FLAC. Decompress and run SHA fingerprint on the decompressed output. if the fingerprints don't match then the output is corrupt.
How do I check audio quality?
To judge the sound quality of the headphones/earphones, you need first to play low-frequency sound to ensure it is perfectly audible. For that, play a song with different pitches. Listen to low sounds from bass guitars/baritone vocals. You must be able to listen to its sound deep, crisp, and rich.
