Instructions for Use
Page 5
...Noisgard 20 100 8 200 500 1000 2000 5000 Frequency / Hz NoiseGard™ HDC 451 The first „open-air" stereo headphone with NoiseGard™ active noise compensation At just 110 g, this „open-air" stereo headphone with NoiseGard™ Warning Signal Attenuation in dB 0 10 Human speech Reduction ... signals remain audible. ̈ Understanding speech is situated on the ear. ̈ When you are wearing the NoiseGard™ HDC 451 you will still be used as a normal headphone without having to the hi-fi unit at home). A green LED lights up so high that noise and „...
...Noisgard 20 100 8 200 500 1000 2000 5000 Frequency / Hz NoiseGard™ HDC 451 The first „open-air" stereo headphone with NoiseGard™ active noise compensation At just 110 g, this „open-air" stereo headphone with NoiseGard™ Warning Signal Attenuation in dB 0 10 Human speech Reduction ... signals remain audible. ̈ Understanding speech is situated on the ear. ̈ When you are wearing the NoiseGard™ HDC 451 you will still be used as a normal headphone without having to the hi-fi unit at home). A green LED lights up so high that noise and „...