Version history

APLS’s current preview version is 0.4.3 (dated 19 Jan 2026). This version of APLS uses LaBB-CAT version 20251105.1346.

APLS version Version date LaBB-CAT version
0.4.3 19 Jan 2026 20251105.1346
0.4.2 4 Dec 2025 20251105.1346
0.4.1 14 Oct 2025 20250819.1454
0.4.0 15 Aug 2025 20250430.1502
0.3.1 6 Jun 2025 20250430.1502
0.3.0 23 May 2025 20250430.1502
0.2.3 6 May 2025 20250430.1502
0.2.2 15 Apr 2025 20241121.1451
0.2.1 29 Jan 2025 20241121.1451
0.2.0 10 Jan 2025 20241121.1451
0.1.4 20 Sep 2024 20240920.1237
0.1.3 4 Sep 2024 20240905.1253
0.1.2 2 Jul 2024 20240702.1253
0.1.1 7 Mar 2024 20240306.132
0.1.0 2 Oct 2023 20231002.152

Version 0.4.3

  • Date: 19 Jan 2026
  • LaBB-CAT version: 20251105.1346

This is a “preview” version of APLS. We have uploaded all remaining transcript series; however, we are still tweaking transcript data and refining the UI, so the data is subject to change in minor ways.

Data updates: LV10

Previously, audio files in the LV10 episode had two channels: both participants (interviewer and interviewee) on the left channel and static on the right channel. (This is in contrast to most transcripts, where the interviewer and interviewee are on separate channels.) The segment alignments for the participant LV10 were also rather poor. As a result, we have deleted the right channel (so that LV10 audio files are now in mono) and rerun forced-alignment for LV10. LV10’s segment alignments are much better now, and more of LV10’s utterances have been aligned:

Layer Annotations in 0.4.2 Annotations in 0.4.3 Change
htk (aligned utterances) 521 546 +25
segment 18,533 20,219 +1,686
phonemes 5,607 6,118 +511
syllables 7,206 7,861 +655
stress 7,206 7,861 +655
foll_pause 5,587 6,110 +523
foll_segment 18,503 20,211 +1,708
speech_rate 533 556 +23

New layers/attributes

  • Added new transcript attributes corresponding to which participant(s) are on which audio channel(s): left_channel_participants, right_channel_participants, single_channel_participants

Corpus status

  • Transcript series (40, all in the pgh0307 collection): CB01, CB05, CB06, CB08, CB10, CB17, FH05, FH07, FH10, FH11, FH17, FH18, FH19, FH20, FH22, FH23, FH26, FH27, HD01, HD05, HD06, HD07, HD09, HD12, HD16, HD17, HD20, HD23, LV03, LV04, LV06, LV07, LV08, LV09, LV10, LV11, LV16, LV17, LV19, LV20
  • Transcripts: 274
  • Transcript duration (H:M:S): 45:37:27.63
  • Word tokens/types: 536801/11891
  • Aligned segments: 1244557
  • Annotation layers (20): comment, foll_pause, foll_segment, frequency_from_celex, frequency_in_corpus, lemma, lexical, morphemes, noise, orthography, overlap, part_of_speech, phonemes, pronounce, redaction, segment, speech_rate, stress, syllables, word

Version 0.4.2

  • Date: 4 Dec 2025
  • LaBB-CAT version: 20251105.1346

This is a “preview” version of APLS. We have uploaded all remaining transcript series; however, we are still tweaking transcript data and refining the UI, so the data is subject to change in minor ways.

New layers/attributes

  • Added a new race participant attribute.
  • Moved the dictionary_phonemes layer from the ‘phonology’ project to the ‘temp’ project to avoid confusion with phonemes, which is probably what users are more interested in for viewing, searching, and extracting data.
    • As a result, version 0.4.2 lists one fewer annotation layer than version 0.4.0, since this count excludes ‘temp’ layers.

User interface changes

  • The user interface has been updated in line with the latest version of LaBB-CAT, plus some APLS-specific tweaks.

Third-party software

  • Praat has been updated to the latest version (6.4.47 for Windows).

Other

  • The server that APLS runs on has received upgrades to memory and computational power.

Corpus status

  • Transcript series (40, all in the pgh0307 collection): CB01, CB05, CB06, CB08, CB10, CB17, FH05, FH07, FH10, FH11, FH17, FH18, FH19, FH20, FH22, FH23, FH26, FH27, HD01, HD05, HD06, HD07, HD09, HD12, HD16, HD17, HD20, HD23, LV03, LV04, LV06, LV07, LV08, LV09, LV10, LV11, LV16, LV17, LV19, LV20
  • Transcripts: 274
  • Transcript duration (H:M:S): 45:37:27.63
  • Word tokens/types: 536801/11891
  • Aligned segments: 1242871
  • Annotation layers (20): comment, foll_pause, foll_segment, frequency_from_celex, frequency_in_corpus, lemma, lexical, morphemes, noise, orthography, overlap, part_of_speech, phonemes, pronounce, redaction, segment, speech_rate, stress, syllables, word

Version 0.4.1

  • Date: 14 Oct 2025
  • LaBB-CAT version: 20250819.1454

This is a “preview” version of APLS. We have uploaded all remaining transcript series; however, we are still tweaking transcript data and refining the UI, so the data is subject to change in minor ways.

User interface changes

The user interface has been updated in line with the latest version of LaBB-CAT, plus some APLS-specific tweaks.

Corpus status

Unchanged from version 0.4.0

Version 0.4.0

  • Date: 15 Aug 2025
  • LaBB-CAT version: 20250430.1502

This is a “preview” version of APLS. We have uploaded all remaining transcript series; however, we are still tweaking transcript data and refining the UI, so the data is subject to change in minor ways.

New transcripts

  • Added transcript series:
    • FH10
    • HD12
    • HD23
    • LV10
    • LV20
  • Added interview files from transcript series CB05and06 (in addition to CB05 and CB06’s individual reading passage and minimal pairs files, which were already in APLS)

Layer data updates

frequency_in_corpus has been regenerated to account for the new transcripts.

Corpus status

  • Transcript series (40, all in the pgh0307 collection): CB01, CB05, CB06, CB08, CB10, CB17, FH05, FH07, FH10, FH11, FH17, FH18, FH19, FH20, FH22, FH23, FH26, FH27, HD01, HD05, HD06, HD07, HD09, HD12, HD16, HD17, HD20, HD23, LV03, LV04, LV06, LV07, LV08, LV09, LV10, LV11, LV16, LV17, LV19, LV20
  • Transcripts: 274
  • Transcript duration (H:M:S): 45:37:27.63
  • Word tokens/types: 536801/11891
  • Aligned segments: 1242871
  • Annotation layers (21): comment, dictionary_phonemes, foll_pause, foll_segment, frequency_from_celex, frequency_in_corpus, lemma, lexical, morphemes, noise, orthography, overlap, part_of_speech, phonemes, pronounce, redaction, segment, speech_rate, stress, syllables, word

Version 0.3.1

  • Date: 6 Jun 2025
  • LaBB-CAT version: 20250430.1502

This is a “preview” version of APLS. We are still adding new transcripts and refining the UI, so the data is subject to change in minor ways.

User interface changes

Layer data updates

Due to suspected duplicate annotations, all CELEX-based layers were regenerated: frequency_from_celex, lemma, and morphemes. This revealed duplicates in the first two layers, with the vast majority in two interviews (CB10interview2.eaf and CB10interview5.eaf). The changes are summarized below (note that all three layers allow vertical peers, so their annotation counts are greater than orthography).

Layer # annotations
Previous Current
word 435,653
orthography 425,769
frequency_from_celex 745,211 724,032
lemma 445,332 432,601
morphemes 454,433 454,433

Corpus status

Unchanged from version 0.2.2

Version 0.3.0

  • Date: 23 May 2025
  • LaBB-CAT version: 20250430.1502

This is a “preview” version of APLS. We are still adding new transcripts and refining the UI, so the data is subject to change in minor ways.

New features

The user interface has been rebuilt on LaBB-CAT version 20250430.1502. For more information, see the User interface page.

Corpus status

Unchanged from version 0.2.2

Version 0.2.3

  • Date: 6 May 2025
  • LaBB-CAT version: 20250430.1502

This is a “preview” version of APLS. We are still adding new transcripts and refining the UI, so the data is subject to change in minor ways.

New features

  • Primarily internal-facing changes related to LaBB-CAT updates (see LaBB-CAT changelog)

Corpus status

Unchanged from version 0.2.2

Version 0.2.2

  • Date: 15 Apr 2025
  • LaBB-CAT version: 20241121.1451

This is a “preview” version of APLS. We are still adding new transcripts and refining the UI, so the data is subject to change in minor ways.

New features

  • Added transcript series HD16

Corpus status

  • Transcript series (35, all in the pgh0307 collection): CB01, CB05, CB06, CB08, CB10, CB17, FH05, FH07, FH11, FH17, FH18, FH19, FH20, FH22, FH23, FH26, FH27, HD01, HD05, HD06, HD07, HD09, HD16, HD17, HD20, LV03, LV04, LV06, LV07, LV08, LV09, LV11, LV16, LV17, LV19
  • Transcripts: 232
  • Transcript duration (H:M:S): 36:56:32.19
  • Word tokens/types: 435653/10472
  • Aligned segments: 1049168
  • Annotation layers (21): comment, dictionary_phonemes, foll_pause, foll_segment, frequency_from_celex, frequency_in_corpus, lemma, lexical, morphemes, noise, orthography, overlap, part_of_speech, phonemes, pronounce, redaction, segment, speech_rate, stress, syllables, word

Version 0.2.1

  • Date: 29 Jan 2025
  • LaBB-CAT version: 20241121.1451

This is a “preview” version of APLS. We are still adding new transcripts and refining the UI, so the data is subject to change in minor ways.

New features

  • Added transcript series FH19

Corpus status

  • Transcript series (34, all in the pgh0307 collection): CB01, CB05, CB06, CB08, CB10, CB17, FH05, FH07, FH11, FH17, FH18, FH19, FH20, FH22, FH23, FH26, FH27, HD01, HD05, HD06, HD07, HD09, HD17, HD20, LV03, LV04, LV06, LV07, LV08, LV09, LV11, LV16, LV17, LV19
  • Transcripts: 218
  • Transcript duration (H:M:S): 33:53:48.89
  • Word tokens/types: 400705/9956
  • Aligned segments: 981529
  • Annotation layers (21): comment, dictionary_phonemes, foll_pause, foll_segment, frequency_from_celex, frequency_in_corpus, lemma, lexical, morphemes, noise, orthography, overlap, part_of_speech, phonemes, pronounce, redaction, segment, speech_rate, stress, syllables, word

Version 0.2.0

  • Date: 10 Jan 2025
  • LaBB-CAT version: 20241121.1451

This is a “preview” version of APLS. We are still adding new transcripts and refining the UI, so the data is subject to change in minor ways.

New features

  • Primarily internal-facing changes related to LaBB-CAT updates (see LaBB-CAT changelog)

Corpus status

  • Transcript series (33, all in the pgh0307 collection): CB01, CB05, CB06, CB08, CB10, CB17, FH05, FH07, FH11, FH17, FH18, FH20, FH22, FH23, FH26, FH27, HD01, HD05, HD06, HD07, HD09, HD17, HD20, LV03, LV04, LV06, LV07, LV08, LV09, LV11, LV16, LV17, LV19
  • Transcripts: 211
  • Transcript duration (H:M:S): 32:47:43.18
  • Word tokens/types: 386785/9770
  • Aligned segments: 955592
  • Annotation layers (21): comment, dictionary_phonemes, foll_pause, foll_segment, frequency_from_celex, frequency_in_corpus, lemma, lexical, morphemes, noise, orthography, overlap, part_of_speech, phonemes, pronounce, redaction, segment, speech_rate, stress, syllables, word

Version 0.1.4

  • Date: 20 Sep 2024
  • LaBB-CAT version: 20240920.1237

This is a pre-release version of APLS. The version patch number has been incremented to reflect the LaBB-CAT software update. Once APLS and its documentation pages stabilize, versioning will begin in earnest.

New features

  • Primarily internal-facing changes related to LaBB-CAT updates

Version 0.1.3

  • Date: 4 Sep 2024
  • LaBB-CAT version: 20240905.1253

This is a pre-release version of APLS. The version patch number has been incremented to reflect the LaBB-CAT software update. Once APLS and its documentation pages stabilize, versioning will begin in earnest.

New features

  • Primarily internal-facing changes related to LaBB-CAT updates

Version 0.1.2

  • Date: 2 Jul 2024
  • LaBB-CAT version: 20240702.1253

This is a pre-release version of APLS. The version patch number has been incremented to reflect the LaBB-CAT software update. Once APLS and its documentation pages stabilize, versioning will begin in earnest.

New features

  • Primarily internal-facing changes related to LaBB-CAT updates (see LaBB-CAT changelog)

Version 0.1.1

  • Date: 7 Mar 2024
  • LaBB-CAT version: 20240306.132

This is a pre-release version of APLS. The version patch number has been incremented to reflect the LaBB-CAT software update. Once APLS and its documentation pages stabilize, versioning will begin in earnest.

New features

  • Primarily internal-facing changes related to LaBB-CAT updates (see LaBB-CAT changelog)

Version 0.1.0

  • Date: 2 Oct 2023
  • LaBB-CAT version: 20231002.152

This is the first pre-release version of APLS. Once APLS and its documentation pages stabilize, versioning will begin in earnest.