{"title":"半速率GSM话音活动检测器中的信息音处理","authors":"P. A. Barrett","doi":"10.1109/ICC.1995.525141","DOIUrl":null,"url":null,"abstract":"A problem has been identified with the handling of information tones by the full-rate GSM voice activity detector (VAD). The paper describes the modifications made in the half-rate GSM VAD which significantly improve the transmission of information tones, thus enabling the implementation of discontinuous transmission (DTX) in the GSM down-link. The modification consists of the addition of a tone detection algorithm to the basic full-rate GSM VAD architecture. The underlying assumptions behind the tone detector are discussed and the potential performance limitations identified. The half-rate GSM VAD successfully detects almost all tones that are likely to be encountered in networks across the world.","PeriodicalId":241383,"journal":{"name":"Proceedings IEEE International Conference on Communications ICC '95","volume":"8 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1995-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Information tone handling in the half-rate GSM voice activity detector\",\"authors\":\"P. A. Barrett\",\"doi\":\"10.1109/ICC.1995.525141\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A problem has been identified with the handling of information tones by the full-rate GSM voice activity detector (VAD). The paper describes the modifications made in the half-rate GSM VAD which significantly improve the transmission of information tones, thus enabling the implementation of discontinuous transmission (DTX) in the GSM down-link. The modification consists of the addition of a tone detection algorithm to the basic full-rate GSM VAD architecture. The underlying assumptions behind the tone detector are discussed and the potential performance limitations identified. The half-rate GSM VAD successfully detects almost all tones that are likely to be encountered in networks across the world.\",\"PeriodicalId\":241383,\"journal\":{\"name\":\"Proceedings IEEE International Conference on Communications ICC '95\",\"volume\":\"8 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1995-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings IEEE International Conference on Communications ICC '95\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICC.1995.525141\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings IEEE International Conference on Communications ICC '95","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICC.1995.525141","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Information tone handling in the half-rate GSM voice activity detector
A problem has been identified with the handling of information tones by the full-rate GSM voice activity detector (VAD). The paper describes the modifications made in the half-rate GSM VAD which significantly improve the transmission of information tones, thus enabling the implementation of discontinuous transmission (DTX) in the GSM down-link. The modification consists of the addition of a tone detection algorithm to the basic full-rate GSM VAD architecture. The underlying assumptions behind the tone detector are discussed and the potential performance limitations identified. The half-rate GSM VAD successfully detects almost all tones that are likely to be encountered in networks across the world.