July 29, 2009 • 9:42 am 0
Believe it or not, many Bluetooth Stereo headsets do not automatically enable A2DP – the advanced audio profile – when they are connected. Instead they just connect in mono mode – “handsfree” or “headset”. Here’s a nifty utility for Windows Mobile based devices to avoid the hassle of switching profiles: AutoA2DP. This neat utility detects a connection and automatically enables wireless stereo. Hey presto! http://supware.net/AutoA2DP/
Filed under: News
July 27, 2009 • 3:26 pm 0
None other that David Price, editor of Hi-Fi World magazine, evaluates five pairs of Bluetooth stereo headsets for The Sunday Times newspaper Technology supplement:
© 2009 Times Newspapers Ltd
Filed under: News
July 22, 2009 • 8:50 am 0
July 15, 2009 • 1:22 pm 0
Which attributes of headphone design have an objective affect on the performance perceived by the listener? One of the most important aspects is “frequency response”: the range of frequencies over which the headphones can effectively reproduce sound energy.
The audible bandwidth is 20 Hz – 20,000 Hz (20kHz). Outside that range, sounds are not audible to most human ears (besides the occasional sound professional or “golden ear” audiophile). Ultra-low frequencies (< 20Hz) are more felt than heard. Beware claims of a measured “flat” frequency response (sometimes listed as 20Hz to 20kHz +/- 3dB). A headphone with a true flat response will sound terrible, because what the ears perceive as a “flat” response actually has many peaks and valleys due to interaction of the sound with the listener’s head before it reaches the ears. Instead, headphones are often equalized to sound flat.
Filed under: News
