Log in
Register
Home
Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
News
Members
Current visitors
New profile posts
Search profile posts
Features
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Menu
Install the app
Install
Reply to thread
Home
Forums
Pro Audio
Varsity
131st AES Convention Observations
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="John Roberts" data-source="post: 41988" data-attributes="member: 126"><p>Re: 131st AES Convention Observations</p><p></p><p></p><p></p><p>No... it is caused by non-linearity (distortion) in the path. Without the distortion two frequencies just give you two frequencies, like when you hear two musical notes playing, you just hear the two notes. If you were to look at the two notes on a oscilloscope you would notice the two notes superimposed, but your ears just hear the two notes. Since distortion means the transfer function is different (nonlinear) for different amplitudes of the signal (like clipping overload) when these two superimposed frequencies pass through a non-linear path, they generate distortion products in a pattern that represents the combined superposition waveform that peaks at the sum and difference frequencies. </p><p></p><p>To reduce intermodulation, increase the signal handling dynamic range of the path so non-linearity doesn't occur until much higher amplitude levels. </p><p></p><p>So perhaps difficult, but no changing the laws of physics, or pact with the devil is required. </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 41988, member: 126"] Re: 131st AES Convention Observations No... it is caused by non-linearity (distortion) in the path. Without the distortion two frequencies just give you two frequencies, like when you hear two musical notes playing, you just hear the two notes. If you were to look at the two notes on a oscilloscope you would notice the two notes superimposed, but your ears just hear the two notes. Since distortion means the transfer function is different (nonlinear) for different amplitudes of the signal (like clipping overload) when these two superimposed frequencies pass through a non-linear path, they generate distortion products in a pattern that represents the combined superposition waveform that peaks at the sum and difference frequencies. To reduce intermodulation, increase the signal handling dynamic range of the path so non-linearity doesn't occur until much higher amplitude levels. So perhaps difficult, but no changing the laws of physics, or pact with the devil is required. JR [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Pro Audio
Varsity
131st AES Convention Observations
Top
Bottom
Sign-up
or
log in
to join the discussion today!