Sean Olive
@seanolive.bsky.social
i am a former Senior Fellow at Harman doing research in perception and measurement of sound quality including loudspeakers and headphones. Interests include music, hockey, wine, cycling, politics, science and technology. A Canadian who is also American.
Joe Veleno to the rescue.
November 21, 2025 at 1:27 AM
Joe Veleno to the rescue.
3 goals on 10 shots? Back to Laval
November 21, 2025 at 1:24 AM
3 goals on 10 shots? Back to Laval
A companion to the book would be software that demonstrates the different attributes of sound quality, what the distortions sound like, and trains and tests your ability to detect and rate them. It would measure how good a listener you are relative to a population.
November 12, 2025 at 7:42 PM
A companion to the book would be software that demonstrates the different attributes of sound quality, what the distortions sound like, and trains and tests your ability to detect and rate them. It would measure how good a listener you are relative to a population.
I will be talking more about this research at CanJam Dallas on Sunday at noon bsky.app/profile/sean...
The second seminar on Sunday is an update of the Nonlinear Distortion in Headphones — a research project being conducted with Pierre Lelièvre at Rtings.com
November 7, 2025 at 5:58 PM
I will be talking more about this research at CanJam Dallas on Sunday at noon bsky.app/profile/sean...
The software automatically loops the sound file and the length of the loop can be edited. There is a training mode that makes the test sighted telling the answers so learning can accelerate. The switching is seamless with no clicks by using separate buffers and a 50 msec crossfade.
November 7, 2025 at 5:57 PM
The software automatically loops the sound file and the length of the loop can be edited. There is a training mode that makes the test sighted telling the answers so learning can accelerate. The switching is seamless with no clicks by using separate buffers and a 50 msec crossfade.
When the listener gives a correct answer the SPL of the distorted file is decreased 3 dB making it harder.. For a wrong answer, the SPL is increased 6 dB. After 6 reversals, the threshold is calculated and the test ends.
November 7, 2025 at 5:44 PM
When the listener gives a correct answer the SPL of the distorted file is decreased 3 dB making it harder.. For a wrong answer, the SPL is increased 6 dB. After 6 reversals, the threshold is calculated and the test ends.
The files were normalized for frequency and loudness. In the test , the listener does a series of trials comparing A, B and X and must decide what X is. A and B contains the clean and distorted version, the order being randomized.
November 7, 2025 at 5:41 PM
The files were normalized for frequency and loudness. In the test , the listener does a series of trials comparing A, B and X and must decide what X is. A and B contains the clean and distorted version, the order being randomized.
The second seminar on Sunday is an update of the Nonlinear Distortion in Headphones — a research project being conducted with Pierre Lelièvre at Rtings.com
November 1, 2025 at 9:08 PM
The second seminar on Sunday is an update of the Nonlinear Distortion in Headphones — a research project being conducted with Pierre Lelièvre at Rtings.com
..put preference bounds around the target. Everyone understands what is flat ( ie balanced) and then you understand where in the spectrum there is too much or too little energy.
October 31, 2025 at 2:48 AM
..put preference bounds around the target. Everyone understands what is flat ( ie balanced) and then you understand where in the spectrum there is too much or too little energy.
Most likely. Hard to remember and I have trouble visually translating raw curves to DF subtracted curves. Not a fan of this method. If you want to make it easier to understand for readers plot the difference between your 1 db/octave target and but bounds around that.
October 31, 2025 at 2:46 AM
Most likely. Hard to remember and I have trouble visually translating raw curves to DF subtracted curves. Not a fan of this method. If you want to make it easier to understand for readers plot the difference between your 1 db/octave target and but bounds around that.
What?? Which section?
October 30, 2025 at 4:18 AM
What?? Which section?
Good to see version 2 is much improved. Version 1 had the dubious honor of being the low anchor in our research, reliably producing sound quality scores in the 10-30 percentile. Does Version 1 fall outside your preference bounds?
October 30, 2025 at 3:03 AM
Good to see version 2 is much improved. Version 1 had the dubious honor of being the low anchor in our research, reliably producing sound quality scores in the 10-30 percentile. Does Version 1 fall outside your preference bounds?
You could certainly fill a book but how many copies would you sell? Is there a wide enough audience?
October 27, 2025 at 12:28 AM
You could certainly fill a book but how many copies would you sell? Is there a wide enough audience?