Recent content by BenB

In general, our audio systems capture all the relevant harmonics on the recording side, and play them back with sufficient accuracy on the reproduction side that there are no issues. However, the noise reduction algorithm I developed differs from the industry standard spectral subtraction in a...

Find a piano or a keyboard. Play your favorite chord 10 times in a row as identically as you can. Same attack, same timing, same sustain. It should sound remarkably similar. Now realize that every time you played that chord you heard a "coherent" result, but the relative phases between your...

Do you want precise (nearly pinpoint) imaging, or breadth of soundstage? Typically these desires are at odds with each other.

Didn't telarc avoid any tweaking of their recordings?

... This looks like a contradiction. What do you think sample-to-sample variation means? You have two samples of a manufacturing yield that don't appear to match perfectly. That implies sample-to-sample variation, which you deny. I'm scratching my head here.

If I'm understanding correctly, you measured both speakers in the same position, right? If so, these measurement represent sample-to-sample differences in response. It's easy for the room to make more than a 3-4 dB difference at 359 Hz, so when they are played in different positions the...

I made you two files to help you diagnose and understand the problem. Noise_Left_Right_Center_00350.wav has band limited noise centered at 350 Hz. It plays for 3 seconds in the left channel, then 3 seconds in the right channel, then 12 seconds in both channels. The level should be the same to...

I know I'm a bit late to this thread, but this is a misrepresentation of what happened. You didn't predict listening scores with a correlation of 0.996. Rather, you produced a model that consumed the preference scores and the measurement information, which was able to optimize a set of weights...

It may not be obvious what Curvature is referencing. For someone with flat, solid walls, the reflections will be specular for the frequencies of interest (those most related to soundstage), and this type of exercise can be insightful. But put a bookshelf on the wall at or near the reflection...

This post represents a major deficiency that is common when people think about reflections and speaker-room interactions: people think in 2 dimensions and flatten the room, collapsing the vertical dimension. In reality, the height is typically the smallest dimension, and floor and ceiling...

I don't particularly like beamwidth as a measurement of vertical dispersion. If there's a narrow mainlobe, along with numerous grating lobes, I'd consider that a wider dispersion speaker compared to one with a wider mainlobe but less spreading or lower sidelobe levels. The latter likely has a...

I don't understand why Eric's patent was awarded in the first place. Anyone who can re-arrange F=ma to be a=F/m should have rejected it. It's nonsense that would even make a hollywood technobabble script writer blush. Any court case he initiates will be embarrassing for him, as experts called...

I contend that most of the (already limited) research on reflections, and particularly vertical reflections isn't useful. If we test a sound source with a vertical reflection, and the same sound source without a vertical reflection, we can expect a few things: 1) The vertical reflection will...

Plenty of "good quality microphones" either inherently have a "presence boost", or literally have a switch to turn it on or off. What percentage of recordings are made with a presence boost on? My ears tell me a large percentage are recorded that way, in the name of artificial detail.

I would caution against this approach as described. It sounds like a good way to end up with the speaker that you happened to be listening to when you had a better week for other reasons. Of course, I do see some merit in longer listening sessions. If you do spend a week with each speaker, I...