Patent ID: 7401022

Claim:
A method of processing a speech frame in a radio system, comprising: channel-decoding a speech frame having propagated over a radio path; determining whether the speech frame is free of defects on the basis of the channel-decoding; if the speech frame is defective on the basis of the channel-decoding, no attempt to correct the defective speech frame is made by a speech decoder; if the speech frame is free of defects on the basis of the channel-decoding, determining only from value of at least one speech parameter in the channel-decoded speech frame and not from using channel codes, whether the speech frame contains speech that is decodable by means of a speech decoder; if it is determined that the speech frame does contain speech that is decodable by means of a speech decoder, the speech frame is decoded by means of a speech decoder; and if, in determining only from value of at least one speech parameter in the channel-decoded speech frame and not from using channel codes whether the speech frame contains speech that is decodable by means of a speech decoder, the speech frame does not contain speech that would be decodable by means of a speech decoder, the speech frame is not decoded.