For your comments:
I have two speaker concepts I'm working on, and I'd like to invite your comments on each given only a single point measurement for each with no further info on the designs. In particular I'm interested in the way each interacts with the room, as observable in the impulse response and the wavelet analysis.
Measurement conditions:
Mic at 1 meter from the tweeter diaphragm, centered on the tweeter axis. Dayton EMM6 mic, hand traced cal file from the supplied printed curve (before cal files were available electronically), Motu M2 interface with loopback into REW.
Measured in my small den, which measures 14' x 11' x 8' high, with the DUT and mic as far from the walls as I can manage but no additional acoustic treatment (no pillows on the floor, etc.).
The measurement level for each was reported as 86 dB in REW, though the level of Speaker A looks maybe a dB lower. FR is displayed with an 8 ms window for each, 1/48 octave FDW.
Here are impulse and FR graphs for the two speakers:
And the wavelets:
I will attach the .mdat file with both measurements should anyone want to take a look.
Clearly reflections and in particular floor bounce dips are visible in the response. What I think is interesting is the difference in the number and strength of the delayed energy as seen in the wavelet. Would you expect one to sound 'cleaner' than the other based on this measurement alone? What else would you observe? Any interpretation or comment is welcome!
Bill
I have two speaker concepts I'm working on, and I'd like to invite your comments on each given only a single point measurement for each with no further info on the designs. In particular I'm interested in the way each interacts with the room, as observable in the impulse response and the wavelet analysis.
Measurement conditions:
Mic at 1 meter from the tweeter diaphragm, centered on the tweeter axis. Dayton EMM6 mic, hand traced cal file from the supplied printed curve (before cal files were available electronically), Motu M2 interface with loopback into REW.
Measured in my small den, which measures 14' x 11' x 8' high, with the DUT and mic as far from the walls as I can manage but no additional acoustic treatment (no pillows on the floor, etc.).
The measurement level for each was reported as 86 dB in REW, though the level of Speaker A looks maybe a dB lower. FR is displayed with an 8 ms window for each, 1/48 octave FDW.
Here are impulse and FR graphs for the two speakers:
And the wavelets:
I will attach the .mdat file with both measurements should anyone want to take a look.
Clearly reflections and in particular floor bounce dips are visible in the response. What I think is interesting is the difference in the number and strength of the delayed energy as seen in the wavelet. Would you expect one to sound 'cleaner' than the other based on this measurement alone? What else would you observe? Any interpretation or comment is welcome!
Bill