Denna logga har ni sett men kan man lita på att de produkter som säljs med den verkligen är certifierade enligt standard? Vem sköter den certifieringen? Kan man t.ex lita på att USB - C DACdonglar, från Kina, som säljs med den loggan verkligen uppfyller kraven/ kriterierna?
High-resolution audio (High-definition audio or HD audio) is a term for audio files with greater than 44.1 kHz sample rate or higher than 16-bit audio bit depth. It commonly refers to 96 or 192 kHz sample rates. However, there also exist 44.1 kHz/24-bit, 48 kHz/24-bit and 88.2 kHz/24-bit recordings that are labeled HD Audio.
Research into high resolution audio began in the late 1980s and high resolution audio content started to become available on the consumer market in 1996.[1]
https://en.wikipedia.org/wiki/High-resolution_audio
Hmm, Det var några år på nacken. Läge att spetsa till kriterierna?
Lite om processen kring att kunna använda loggan.
But getting that logo placed on your device isn’t as easy as it sounds. Recording Industry Association of America (RIAA) introduces the following guidelines for certification. Hardware made for hi-res audio must meet certain requirements before it can be branded with the distinguished logo. Some of these requirements include:
A microphone response performance of 40 kHz and above
Able to record, decode and play 96 kHz / 24 bit formats
Amplification performance of 40 kHz and above
https://www.samma3a.com/tech/en/hi-res- ... -products/