GB2075693B - Spectrum analyzer - Google Patents
Spectrum analyzerInfo
- Publication number
- GB2075693B GB2075693B GB8107016A GB8107016A GB2075693B GB 2075693 B GB2075693 B GB 2075693B GB 8107016 A GB8107016 A GB 8107016A GB 8107016 A GB8107016 A GB 8107016A GB 2075693 B GB2075693 B GB 2075693B
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- fed
- memory
- submultiples
- spectrum analyzer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001228 spectrum Methods 0.000 title abstract 2
- 238000010183 spectrum analysis Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
- G01R23/165—Spectrum analysis; Fourier analysis using filters
- G01R23/167—Spectrum analysis; Fourier analysis using filters with digital filters
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Mathematical Physics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Analogue/Digital Conversion (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A spectrum analyzer, e.g., for telecommunication application, includes an input A to D converter (AD) for converting an input analog signal to corresponding binary words, these words then being fed via a buffer (PS) and a multiplexer (MX) to a digital filter (DF). Under the action of a control circuit (CS) the filter (DF) is fed with a series of different submultiples of a clock signal. For each submultiples the filter (DF) is also fed into a corresponding set of filter constants from a memory (PF). Spectrum analysis is made by changing the frequency of the clock submultiple signal to the filter and simultaneously supplying the corresponding filter constants from the memory while ensuring that the centre frequency of the filter passband remains constant. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803009785 DE3009785A1 (en) | 1980-03-14 | 1980-03-14 | SPECTRAL ANALYZER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2075693A GB2075693A (en) | 1981-11-18 |
| GB2075693B true GB2075693B (en) | 1983-09-21 |
Family
ID=6097180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8107016A Expired GB2075693B (en) | 1980-03-14 | 1981-03-05 | Spectrum analyzer |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS56145365A (en) |
| DE (1) | DE3009785A1 (en) |
| FR (1) | FR2478355A1 (en) |
| GB (1) | GB2075693B (en) |
| IT (1) | IT1136820B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0523263B1 (en) * | 1991-07-16 | 1997-01-08 | Wavetek Gmbh | A method for determining the frequency of a dominant signal in an input signal |
| EP1592136B1 (en) * | 2004-04-21 | 2012-07-11 | St Microelectronics S.A. | Adaptive demodulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2074813A1 (en) * | 1970-01-30 | 1971-10-08 | Lannionnais Electronique |
-
1980
- 1980-03-14 DE DE19803009785 patent/DE3009785A1/en not_active Withdrawn
-
1981
- 1981-03-05 GB GB8107016A patent/GB2075693B/en not_active Expired
- 1981-03-13 JP JP3546181A patent/JPS56145365A/en active Pending
- 1981-03-13 FR FR8105034A patent/FR2478355A1/en active Granted
- 1981-03-16 IT IT20349/81A patent/IT1136820B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE3009785A1 (en) | 1981-10-01 |
| IT1136820B (en) | 1986-09-03 |
| GB2075693A (en) | 1981-11-18 |
| FR2478355B1 (en) | 1984-12-28 |
| JPS56145365A (en) | 1981-11-12 |
| FR2478355A1 (en) | 1981-09-18 |
| IT8120349A0 (en) | 1981-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |