Analog-to-digital converter (adc) dynamic range enhancement for voice-activated systems
US-2016314805-A1 · Oct 27, 2016 · US
Polymorphic playback system with signal detection filters of different latencies
US10726873B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10726873-B2 |
| Application number | US-201816103288-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 14, 2018 |
| Priority date | Aug 14, 2018 |
| Publication date | Jul 28, 2020 |
| Grant date | Jul 28, 2020 |
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Abstract
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A polymorphic playback system is disclosed in which one or more parameters of a signal path of the polymorphic playback system are varied based on one or more characteristics of a playback signal processed by the signal path, wherein the polymorphic playback system may include a lower-latency detection filter, a higher-latency detection filter, and a control subsystem that uses the lower-latency detection filter for detecting the one or more first characteristics of the playback signal and uses the higher-latency detection filter for detecting the one or more second characteristics of the playback signal.
First claim
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What is claimed is: 1. A polymorphic playback system wherein one or more parameters of a signal path of the polymorphic playback system are varied based on one or more characteristics of a playback signal processed by the signal path, comprising: a lower-latency detection filter; a higher-latency detection filter; and a control subsystem that: uses the lower-latency detection filter for detecting the one or more first characteristics of the playback signal; and uses the higher-latency detection filter for detecting the one or more second characteristics of the playback signal. 2. The system of claim 1 , wherein the one or more first characteristics of the playback signal include one or more of detection of a slew rate of the playback signal at a zero crossing of the playback signal, a determination of whether the playback signal causes signal clipping in the signal path, and a determination of spectral content of the playback signal. 3. The system of claim 1 , wherein the one or more second characteristics of the playback signal include detection of a signal magnitude of the playback signal. 4. The system of claim 1 , wherein the control subsystem is configured to power down the lower-latency detection filter when the lower-latency detection filter is not in use. 5. The system of claim 1 , wherein the control subsystem is configured to power down the higher-latency detection filter when the higher-latency detection filter is not in use. 6. The system of claim 1 , wherein the one or more parameters include an analog gain and a digital gain of the signal path. 7. The system of claim 1 , wherein the one or more parameters include a noise floor of the signal path. 8. A method for use in a polymorphic playback system wherein one or more parameters of a signal path of the polymorphic playback system are varied based on one or more characteristics of a playback signal processed by the signal path, comprising: using a lower-latency detection filter for detecting the one or more first characteristics of the playback signal; and using a higher-latency detection filter for detecting the one or more second characteristics of the playback signal. 9. The method of claim 8 , wherein the one or more first characteristics of the playback signal include one or more of detection of a slew rate of the playback signal at a zero crossing of the playback signal, a determination of whether the playback signal causes signal clipping in the signal path, and a determination of spectral content of the playback signal. 10. The method of claim 8 , wherein the one or more second characteristics of the playback signal include detection of a signal magnitude of the playback signal. 11. The method of claim 8 , further comprising powering down the lower-latency detection filter when the lower-latency detection filter is not in use. 12. The method of claim 8 , further comprising powering down the higher-latency detection filter when the higher-latency detection filter is not in use. 13. The method of claim 8 , wherein the one or more parameters include an analog gain and a digital gain of the signal path. 14. The method of claim 8 , wherein the one or more parameters include a noise floor of the signal path.
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Classifications
- G11B27/034Primary
on discs (G11B27/036, G11B27/038 take precedence) · CPC title
- H03G3/3005Primary
in amplifiers suitable for low-frequencies, e.g. audio amplifiers (H03G3/32, H03G3/34 take precedence) · CPC title
by using information detectable on the record carrier · CPC title
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- What does patent US10726873B2 cover?
- A polymorphic playback system is disclosed in which one or more parameters of a signal path of the polymorphic playback system are varied based on one or more characteristics of a playback signal processed by the signal path, wherein the polymorphic playback system may include a lower-latency detection filter, a higher-latency detection filter, and a control subsystem that uses the lower-latenc…
- Who is the assignee on this patent?
- Cirrus Logic Int Semiconductor Ltd, Cirrus Logic Inc
- What technology area does this patent fall under?
- Primary CPC classification G11B27/034. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 28 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).