Hi, diyaudio!
Attached is a flac that plays a 100hz and 1000hz sine 3 times. They all stop at the same time but the 1000hz starts with a delay of 0ms, 1ms, and 2ms.
The levels of 100hz and 1000hz are the same so it can be hard to hear 100hz over 1000hz. Putting the ear near the woofer can help with hearing. Play the clip a few times and try to lock onto the bass tone.
The question is: do the samples sound similar or different?
I am trying to exploit a slower group delay on some of my speakers and this is my first go at a test.
Thanks!!!!
Attached is a flac that plays a 100hz and 1000hz sine 3 times. They all stop at the same time but the 1000hz starts with a delay of 0ms, 1ms, and 2ms.
The levels of 100hz and 1000hz are the same so it can be hard to hear 100hz over 1000hz. Putting the ear near the woofer can help with hearing. Play the clip a few times and try to lock onto the bass tone.
The question is: do the samples sound similar or different?
I am trying to exploit a slower group delay on some of my speakers and this is my first go at a test.
Thanks!!!!
I have listened to it and the differences are obvious - at least on headphones. But are you sure that the delayed versions only have a delay of 1ms or 2ms respectively ?
Something else: What do you mean by slower group-delay ? Do you actually want to lower it ? Keep in mind that if you want to test for audibility the signal should approximate the group delay behaviour of a speaker. Group delay of this kind is only produced by speakers with a physical delay of the highs, like a direct radiating woofer combined with a horn. Group delay distortion that is caused by a crossover however does usually have leading highs with trailing lows.
Regards
Charles
Something else: What do you mean by slower group-delay ? Do you actually want to lower it ? Keep in mind that if you want to test for audibility the signal should approximate the group delay behaviour of a speaker. Group delay of this kind is only produced by speakers with a physical delay of the highs, like a direct radiating woofer combined with a horn. Group delay distortion that is caused by a crossover however does usually have leading highs with trailing lows.
Regards
Charles
Looks like 100 & 200 ms to me. I.E. 0.1 sec and 0.2 sec
