Speech is coded using an orthogonal search by calculating a search reference value. An adaptive codevector representing a pitch component is generated. A random codevector representing a random component is also generated. The orthogonal search further includes generating a synthetic speech signal by...http://www.google.com/patents/US7925501?utm_source=gb-gplus-sharePatent US7925501 - Speech coder using an orthogonal search and an orthogonal search method
