| 2000 | Interspeech | Phonetic vocoder assessment. | Carlos M. Ribeiro, Isabel Trancoso, Diamantino Caseiro |
| 1998 | Interspeech | Improving speaker recognisability in phonetic vocoders. | Carlos M. Ribeiro, Isabel Trancoso |
| 1997 | Interspeech | Phonetic vocoding with speaker adaptation. | Carlos M. Ribeiro, Isabel Trancoso |
| 1996 | Interspeech | Application of speaker modification techniques to phonetic vocoding. | Carlos M. Ribeiro, Isabel Trancoso |
| 1993 | Interspeech | A software tool for speech collection, recognition and reproduction. | Carlos M. Ribeiro, Isabel Trancoso, Antnio Joaquim Serralheiro |
| 1993 | Interspeech | The relationship between spelled and spoken portuguese: implications for speech synthesis and recognition. | Cu Viana, Isabel Trancoso, Carlos M. Ribeiro, Amalia Andrade, Ernesto d'Andrade |
| 1991 | Interspeech | A 4.8 kbps celp coder with post-processing. | Carlos M. Ribeiro, Isabel Trancoso |
| 1990 | ICASSP | CELP: a candidate for GSM half-rate coding. | Isabel Trancoso, Carlos M. Ribeiro, Lus B. Almeida, Lus C. Oliveira, Jorge S. Marques |
| 1989 | Interspeech | Adaptive and stochastic search procedures in CELP based coders. | Isabel Trancoso, Carlos M. Ribeiro |