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Seem strange,Is someone like highest power in one cheap class D
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<blockquote data-quote="Hennie" data-source="post: 60300" data-attributes="member: 20"><p>OK, it's a slow day. Time to split hairs...</p><p></p><p>With PWM the pulse width is proportional to the desired signal amplitude, so it's an analogue signal after all. In PWM amps with analogue inputs the pulse width is not digitized to bits & bytes, therefore it's really an analogue amp.</p><p></p><p>But wait! Some analogue input PWM amps actually do digitize the input signal amplitude and compute a representative pulse width. So it's really digital. So everybody is correct. It's a reassuring thought.</p><p></p><p>In other parts of the world, the following distinction is often made:</p><p></p><p>Analogue input amps with a PWM modulator and feedback such as Hypex are seen as analogue. So says Bruno Putzeys himself. The signal processing used is mostly analogue and Putzeys sees himself as an analogue engineer applying analogue knowledge and a bit of power electronics expertise.</p><p></p><p>Digital input amps, such as Tact Millenium, which translate a digital input into a digitally derived pulse width, pulse density or something similar, operate without feedback, are seen as digital. All signal processing is purely digital until the last step, which is the passive filter just before the loudspeaker. Here you would call in an analogue engineer...but then the switching PSU is a very critical part of the design, and more analogue than digital.</p><p></p><p>I give up.</p></blockquote><p></p>
[QUOTE="Hennie, post: 60300, member: 20"] OK, it's a slow day. Time to split hairs... With PWM the pulse width is proportional to the desired signal amplitude, so it's an analogue signal after all. In PWM amps with analogue inputs the pulse width is not digitized to bits & bytes, therefore it's really an analogue amp. But wait! Some analogue input PWM amps actually do digitize the input signal amplitude and compute a representative pulse width. So it's really digital. So everybody is correct. It's a reassuring thought. In other parts of the world, the following distinction is often made: Analogue input amps with a PWM modulator and feedback such as Hypex are seen as analogue. So says Bruno Putzeys himself. The signal processing used is mostly analogue and Putzeys sees himself as an analogue engineer applying analogue knowledge and a bit of power electronics expertise. Digital input amps, such as Tact Millenium, which translate a digital input into a digitally derived pulse width, pulse density or something similar, operate without feedback, are seen as digital. All signal processing is purely digital until the last step, which is the passive filter just before the loudspeaker. Here you would call in an analogue engineer...but then the switching PSU is a very critical part of the design, and more analogue than digital. I give up. [/QUOTE]
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Seem strange,Is someone like highest power in one cheap class D
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