比较想知道,这种音量控制如果是30脉冲的编码器,是不是要拧好几圈才能从最小到最大的控制?
希望楼主能做 ...
楼主说的有道理,我们不但要模仿,还要有突破才是创新和发展。 板子明也快到了,原件也被齐,先做一套,朋友也催。 我觉得稳定运转最重要。实际音量调整使用上不很频繁,一般也不咋用面板,还是遥控使用上较方便。有静音功能和断电记忆。我有原装机,见图片,原机也没有旋转快,音量就快。 audiohiend 发表于 2018-1-2 20:36
原机只是1个字一个字加减而已。
在输入端对地短路的情况下你调节音量时,输出有没有一点的啪啪声的调节音?说是调一下响一下。 audiohiend 发表于 2018-1-2 20:35
我觉得稳定运转最重要。实际音量调整使用上不很频繁,一般也不咋用面板,还是遥控使用上较方便。有静音功能 ...
我个人觉得也没多大意义,我只是从软件角度去想怎么去实现这个功能,我也做了MSA6116的音量板,也没加这个功能. audiohiend 发表于 2018-1-2 20:36
原机只是1个字一个字加减而已。
不知楼主去这样做过测试没有:在输入对地短路的情况下调节音量的大小的时候在输出端会有很小的"啪啪"调节音? 是这样的。 我回的是52楼 本帖最后由 audiohiend 于 2018-1-4 21:26 编辑
mas6116 参数:MAS6116
Stereo Digital Volume Control
• Signal Voltage up to ± 18V
• Two Independent Channels
• Use of Differential DACs Possible
• Serial Control Registers
DESCRIPTION
MAS6116 is a stereo volume control for audio
systems, which require high output voltages (AC3).
It has serial interface, which controls two audio
channels. Simple serial interface allows
microcontroller to control many MAS6116 chips on
the same PCB board. “Clicking” between gain
changes is eliminated by changing gain only when
zero crossing has been detected in the input signal.
MAS6116 also features a peak detection circuitry
that allows easy monitoring of the output signal.
MAS6116 has also a set of “instant gain change”
instructions that allow fast gain switching. The use
of external operational amplifier provides flexibility
for the operating voltage, signal swing, noise floor
and cost optimization.
FEATURES APPLICATION
• Signal Voltage up to ± 18V
• Two Independent Channels
• Use of Differential DACs Possible
• Serial Control Registers
• Zero Cross Detection for Gain Changes
• Gain Range +15.5db…-111.5dB
• 0.5 dB Gain Step Size
• Mute Pin
• Power On/Off Transient Suppression
• Signal Peak Level Comparator with Adjustable
Reference
• Independent Writing to Both Channels
• Instant Gain Change Function for Fast Gain
Switching
• XMUTE Using the Zero Cross and Timeout
Functions
• Write Operation Status Register
• High End Audio Systems
• Multi-channel Audio Systems 高级的马兰士也用6116芯片 芯片现在也少卖。 这货不就是WM8816的翻版嘛。
而且性能还不如WM8816,单端输入THD比WM8816高多了
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