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<blockquote data-quote="thch" data-source="post: 1540616" data-attributes="member: 562032">@thylantyr, your argument is that a DMM can detect clipping as effectively as an OScope (keyword is _effectively_).&nbsp; some people, like SPL competitors or SQ competitiors, or even engineers may want to know information about the exact onset of clipping.&nbsp; your method has one flaw in that it assumes things about the amplifier.&nbsp; this can be bad in that an unregulated amp may be capable of added output if the supply voltage is raised.&nbsp; an SPL competitor would want to know this.&nbsp; conversly, in a system with an overrated amp the peak detection would never trigger because the user assumes the output can be higher then is possible.&nbsp; Your circuit is a valid way of doing things, and i&#039;d suggest that adding a timer or other short-time memory circuit on the output would improve performance as short time detections would result in human viewable output.&nbsp; unfortunantly, your circuit is not as easy to use or as reliable -- you must tune the circuit for each amp, and even then results aren&#039;t garunteed.&nbsp; My goal was to create a more generic way to detect clipping with performance similar to an OScope, but without the associated costs.@thylantyr, i think i figured out the circuit.&nbsp; i assume the caps are shunt devices and the switch is some type of MOS device@AcidDreams, basically to convert the highest input into something useable, i must attenuate by a factor of up to 100.&nbsp; this means my circuit could get small inputs that are then made even smaller.&nbsp; my hope is to detect an input of 200V, and adjust the gain of the amp automatically.&nbsp; or get a small input singal and get a higher gain automatically.&nbsp; that way any input to the amp works and the circuit overall just works.&nbsp; if i can do this, I can later add a micoprocessor to do an FFT analysis and determine the distortion components in the signal, which is something that some OScopes might not do.</blockquote>

[QUOTE="thch, post: 1540616, member: 562032"] @thylantyr, your argument is that a DMM can detect clipping as effectively as an OScope (keyword is _effectively_). some people, like SPL competitors or SQ competitiors, or even engineers may want to know information about the exact onset of clipping. your method has one flaw in that it assumes things about the amplifier. this can be bad in that an unregulated amp may be capable of added output if the supply voltage is raised. an SPL competitor would want to know this. conversly, in a system with an overrated amp the peak detection would never trigger because the user assumes the output can be higher then is possible. Your circuit is a valid way of doing things, and i'd suggest that adding a timer or other short-time memory circuit on the output would improve performance as short time detections would result in human viewable output. unfortunantly, your circuit is not as easy to use or as reliable -- you must tune the circuit for each amp, and even then results aren't garunteed. My goal was to create a more generic way to detect clipping with performance similar to an OScope, but without the associated costs. @thylantyr, i think i figured out the circuit. i assume the caps are shunt devices and the switch is some type of MOS device @AcidDreams, basically to convert the highest input into something useable, i must attenuate by a factor of up to 100. this means my circuit could get small inputs that are then made even smaller. my hope is to detect an input of 200V, and adjust the gain of the amp automatically. or get a small input singal and get a higher gain automatically. that way any input to the amp works and the circuit overall just works. if i can do this, I can later add a micoprocessor to do an FFT analysis and determine the distortion components in the signal, which is something that some OScopes might not do. [/QUOTE]

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