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What Is Intermodulation Distortion?
Manage episode 377136336 series 3511929
"Not all distortion is horrible" is a notion many come to observe at some point along the audiophile journey. Maybe that's not the best way to put it. How about, "some distortions are less horrible than others".
In past episodes of The Hifi Podcast, Darren and Duncan have talked about complex versus simple distortions, and the fact that simple circuits and simple devices distort simply. And simple distortion is much, much more tolerable to our ears.
Intermodulation distortion (IMD) is a complex beast of a distortion, creating byproducts of the difference between competing frequencies. A shimmering cymbal hit with fundamentals of 9KHz and 9.1KHz for example will produce an IMD product of 100Hz. Yes, that's right - artificial bass noise created from within the amplifier, for just these two tones. Imagine what happens with real music playing!
This week's episode focuses on IMD and explains why amps are the biggest culprits of this sonic bugaboo.
Also in this episode, the guys answer a couple questions about system battery power and round listening rooms. The album of the week is a killer sounding new joint from perhaps the biggest name in bluegrass right now.
This podcast is powered by CommonGround Cables Whisper power cable. Read customer reviews and order your own at www.commongroundcables.com.
Find all of our album recommendations in one place, at www.thehifipodcast.net.
97 ตอน
Manage episode 377136336 series 3511929
"Not all distortion is horrible" is a notion many come to observe at some point along the audiophile journey. Maybe that's not the best way to put it. How about, "some distortions are less horrible than others".
In past episodes of The Hifi Podcast, Darren and Duncan have talked about complex versus simple distortions, and the fact that simple circuits and simple devices distort simply. And simple distortion is much, much more tolerable to our ears.
Intermodulation distortion (IMD) is a complex beast of a distortion, creating byproducts of the difference between competing frequencies. A shimmering cymbal hit with fundamentals of 9KHz and 9.1KHz for example will produce an IMD product of 100Hz. Yes, that's right - artificial bass noise created from within the amplifier, for just these two tones. Imagine what happens with real music playing!
This week's episode focuses on IMD and explains why amps are the biggest culprits of this sonic bugaboo.
Also in this episode, the guys answer a couple questions about system battery power and round listening rooms. The album of the week is a killer sounding new joint from perhaps the biggest name in bluegrass right now.
This podcast is powered by CommonGround Cables Whisper power cable. Read customer reviews and order your own at www.commongroundcables.com.
Find all of our album recommendations in one place, at www.thehifipodcast.net.
97 ตอน
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1 Duncan's Next Half-Day Speaker Project 1:30:01

1 Exploring The Ins and Outs of PCB Design 2:14:42

1 A Case For (And Against) the Integrated Amplifier 1:51:42

1 Remembering Bascom H. King 1:32:57

1 The Hardest and Easiest Instruments to Record 1:50:54

1 Tubes, Tubes, Tubes with Jordan Kamper 2:06:47

1 Lessons From Our DIY Speaker Journey 1:51:08

1 Speaker Specs Demystified with Chris Brunhaver 2:08:01

1 How To Use Ferrite Cores, And Other Audiophile Questions 1:45:13

1 What Motivates Us? 2:00:43

1 Talking Aurender & Streaming with Ari Margolis 2:04:10

1 Balanced Phono Inputs & More Questions 2:21:32

1 Listening In The Dark 1:55:58

1 What Is Bridge Tied Load, or BTL? 2:23:49

1 Live Versus Recorded Sound, And More Questions 1:44:41

1 Wacky Audio Stories 2:31:31

1 Misconceptions In Audio, Vol. 1 2:07:23

1 Why Do Some Components Invert Phase? 1:19:40

1 Op-Amp Rolling, And Other Questions 2:35:17

1 Preparing For The Worst 1:57:23

1 Perfecting The Party Zone, Part 2 2:18:44

1 Nearfield Versus Farfield Listening 2:13:42
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