# Logarithmic compression methods for spectral data

## Abstract

A method is provided for logarithmic compression, transmission, and expansion of spectral data. A log Gabor transformation is made of incoming time series data to output spectral phase and logarithmic magnitude values. The output phase and logarithmic magnitude values are compressed by selecting only magnitude values above a selected threshold and corresponding phase values to transmit compressed phase and logarithmic magnitude values. A reverse log Gabor transformation is then performed on the transmitted phase and logarithmic magnitude values to output transmitted time series data to a user.

- Inventors:

- (Los Alamos, NM)

- Publication Date:

- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM

- OSTI Identifier:
- 875094

- Patent Number(s):
- US 6529927

- Assignee:
- The Regents of the University of California (Los Alamos, NM) LANL

- DOE Contract Number:
- W-7405-ENG-36

- Resource Type:
- Patent

- Country of Publication:
- United States

- Language:
- English

- Subject:
- logarithmic; compression; methods; spectral; data; method; provided; transmission; expansion; log; gabor; transformation; incoming; time; series; output; phase; magnitude; values; compressed; selecting; selected; threshold; transmit; reverse; performed; transmitted; user; time series; compression methods; /708/

### Citation Formats

```
Dunham, Mark E.
```*Logarithmic compression methods for spectral data*. United States: N. p., 2003.
Web.

```
Dunham, Mark E.
```*Logarithmic compression methods for spectral data*. United States.

```
Dunham, Mark E. Wed .
"Logarithmic compression methods for spectral data". United States. https://www.osti.gov/servlets/purl/875094.
```

```
@article{osti_875094,
```

title = {Logarithmic compression methods for spectral data},

author = {Dunham, Mark E.},

abstractNote = {A method is provided for logarithmic compression, transmission, and expansion of spectral data. A log Gabor transformation is made of incoming time series data to output spectral phase and logarithmic magnitude values. The output phase and logarithmic magnitude values are compressed by selecting only magnitude values above a selected threshold and corresponding phase values to transmit compressed phase and logarithmic magnitude values. A reverse log Gabor transformation is then performed on the transmitted phase and logarithmic magnitude values to output transmitted time series data to a user.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {2003},

month = {1}

}

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