佩服
thxman wrote:
Harman MLL...(恕刪)
To achieve a relevant quality assessment about the audio quality and sound quality of an audio system, we propose the following conditions to be met for valid listening tests:
1) Tests must be controlled: all factors other than the audio system must be either removed or kept constant:
* sound source (live musicians can not be used)
* acoustic environment
* listening position & angle
* visible environment
* temperature and humidity
* smell and taste
2) at least two listening sessions must be performed per listening test to allow differential analysis.
* A single session referencing to memory is not valid.
3) tests must be blind
* The test subjects must not know to what reference they are listening to
4) audio materials must be shorter than 20 seconds
5) If different signal chains are used, their total gain must be calibrated within 0.5 dB
ldw406 wrote:
請問audio quality 和 sound quality 有何不同?