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#1
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Thanks K7DYY...
Thanks goes out to K7DYY for sending me his PCB to help with my new
design... http://www.telstar-electronics.com/d...s/WhatsNew.htm |
#2
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Thanks K7DYY...
On 20 Dec 2006 10:59:17 -0800, "Telstar Electronics"
wrote in . com: Thanks goes out to K7DYY for sending me his PCB to help with my new design... Aw jeez, you aren't going to try 11m Class E, are you? You haven't even mastered the basic concept of linearity! I can see it now..... Class E turned broadband by substituting the high-Q filter for a ferrite balun resulting in harmonics all the way up to UHF. Can you say "finger stock"? |
#3
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Thanks K7DYY...
Frank Gilliland wrote:
Aw jeez, you aren't going to try 11m Class E, are you? You haven't even mastered the basic concept of linearity! I can see it now..... Class E turned broadband by substituting the high-Q filter for a ferrite balun resulting in harmonics all the way up to UHF. Can you say "finger stock"? Frank... as usual... I have no idea what you're babbling about. You're as nutty as a Chrismas fruitcake. See the latest project at: http://www.telstar-electronics.com/d...s/WhatsNew.htm |
#4
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Thanks K7DYY...
On 21 Dec 2006 04:19:36 -0800, "Telstar Electronics"
wrote: Frank Gilliland wrote: Aw jeez, you aren't going to try 11m Class E, are you? You haven't even mastered the basic concept of linearity! I can see it now..... Class E turned broadband by substituting the high-Q filter for a ferrite balun resulting in harmonics all the way up to UHF. Can you say "finger stock"? Frank... as usual... I have no idea what you're babbling about. You're as nutty as a Chrismas fruitcake. See the latest project at: http://www.telstar-electronics.com/d...s/WhatsNew.htm Why would you put any energy into an audio speech processor? You yourself have even discounted the usefulness of audio speech processing when commenting in the past about Lou Franklins model. Are you trying to tell us that you can re-invent a more useful wheel? |
#5
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Thanks K7DYY...
wrote:
Why would you put any energy into an audio speech processor? You yourself have even discounted the usefulness of audio speech processing when commenting in the past about Lou Franklins model. Are you trying to tell us that you can re-invent a more useful wheel? You are absolutely right... I don't like Lou's design. His design clips the hell out of the audio signal... and then attempts to filter his way to sucess. Nice idea, but doesn't work well. However, I never said that other types of processing didn't work.. or weren't effective. Reinvent the wheel... no... Analog Devices has already taken care of that... I'm just using their IC chip in my design. The audio distortion is very low with this chip. www.telstar-electronics.com |
#6
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Thanks K7DYY...
On 21 Dec 2006 05:36:58 -0800, "Telstar Electronics"
wrote in . com: wrote: Why would you put any energy into an audio speech processor? You yourself have even discounted the usefulness of audio speech processing when commenting in the past about Lou Franklins model. Are you trying to tell us that you can re-invent a more useful wheel? You are absolutely right... I don't like Lou's design. His design clips the hell out of the audio signal... and then attempts to filter his way to sucess. Nice idea, but doesn't work well. However, I never said that other types of processing didn't work.. or weren't effective. Reinvent the wheel... no... Analog Devices has already taken care of that... I'm just using their IC chip in my design. The audio distortion is very low with this chip. The distortion specs for the chip are given so the designer can decide whether the chip is good enough for the studio or stage; for CB radio it's overkill. Regardless, you missed the point once again: audio compression -IS- distortion. IOW, hook it up to a distortion meter, crank it up to 15:1, start talking and that needle will bounce all over the place. The chip also has some other issues that you really need to research first. Want a decent compression circuit? Start with a bucket-brigade chip like the old SAD-1024. That way the control signal can be adjusted for a peak -before- it slams into the VCA. This eliminates the need for frequency compensation, which is a common problem with real-time and feedback types of compression circuits, including the SSM2166. It also allows you to get higher compression with no distortion from spurious harmonics that would otherwise need filtering. And the circuit has a couple other benefits: it reduces feedback which is great when some dope modifies his radio for talkback, and you can use the chip to make some really cool sound effects such as echo and reverb. But I suppose it's easier to hack someone else's design than learn things for yourself, isn't it, Brian? |
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