---
title: "Changes to アクセント句から音素長を得る (AivisSpeech Engine では常にダミーの値が返されます)"
method: POST
path: "/mora_length"
---

# Changes to アクセント句から音素長を得る (AivisSpeech Engine では常にダミーの値が返されます)

`POST /mora_length`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 15 of 50 revisions.

- **2026-03-31** `bd7182f25e54`: 2 info
- **2025-03-02** `d8b6a60f88af`: 1 info
- **2024-10-29** `54501f4624fd`: 6 breaking, 1 warning, 9 info
- **2024-10-05** `e86c0159e1bd`: 7 breaking, 8 warning, 1 info
- **2024-09-26** `179894d155aa`: 6 breaking, 1 warning, 9 info
- **2024-07-20** `eb97301b5bb3`: 5 breaking, 5 info
- **2024-07-09** `1d0fcadb80c5`: 2 breaking, 1 warning, 7 info
- **2024-06-28** `3b94f9a50fd2`: 5 breaking, 5 info
- **2024-05-02** `7d46d11815c2`: 2 breaking, 1 warning, 7 info
- **2024-04-26** `907e5011a1aa`: 5 breaking, 5 info
- **2024-03-22** `ef4da11d01e0`: 2 breaking, 1 warning, 7 info
- **2024-01-28** `2e8475c446af`: 1 breaking, 1 warning, 1 info
- **2024-01-22** `ba5021ec9a6d`: 3 info
- **2024-01-20** `2a8c9cc0823a`: 1 breaking, 1 warning, 1 info
- **2024-01-17** `1bed97d41915`: 7 breaking, 10 warning, 5 info

## Changes

- **2026-03-31** `bd7182f25e54`: 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status
- **2025-03-02** `d8b6a60f88af`: 1 info
  - api operation id `mora_length_mora_length_post` removed and replaced with `mora_length`
- **2024-10-29** `54501f4624fd`: 6 breaking, 1 warning, 9 info
  - added the new required request property `items/pause_mora/pitch`
  - added the new required request property `items/pause_mora/text`
  - added the new required request property `items/pause_mora/vowel`
  - added the new required request property `items/pause_mora/vowel_length`
  - the `items/pause_mora` request property type changed from no type to `object`
  - the `items/pause_mora` response's property type changed from no type to `object` for status `200`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` request property `allOf` list
  - added the new optional request property `items/pause_mora/consonant`
  - added the new optional request property `items/pause_mora/consonant_length`
  - added the optional property `items/pause_mora/consonant` to the response with the `200` status
  - added the optional property `items/pause_mora/consonant_length` to the response with the `200` status
  - removed `#/components/schemas/Mora` from the `items/pause_mora` response property `allOf` list for the response status `200`
  - added the required property `items/pause_mora/pitch` to the response with the `200` status
  - added the required property `items/pause_mora/text` to the response with the `200` status
  - added the required property `items/pause_mora/vowel` to the response with the `200` status
  - added the required property `items/pause_mora/vowel_length` to the response with the `200` status
- **2024-10-05** `e86c0159e1bd`: 7 breaking, 8 warning, 1 info
  - added `#/components/schemas/Mora` to the `items/pause_mora` request property `allOf` list
  - the `items/pause_mora` request property type changed from `object` to no type
  - the `items/pause_mora` response's property type changed from `object` to no type for status `200`
  - removed the required property `items/pause_mora/pitch` from the response with the `200` status
  - removed the required property `items/pause_mora/text` from the response with the `200` status
  - removed the required property `items/pause_mora/vowel` from the response with the `200` status
  - removed the required property `items/pause_mora/vowel_length` from the response with the `200` status
  - removed the request property `items/pause_mora/consonant`
  - removed the request property `items/pause_mora/consonant_length`
  - removed the request property `items/pause_mora/pitch`
  - removed the request property `items/pause_mora/text`
  - removed the request property `items/pause_mora/vowel`
  - removed the request property `items/pause_mora/vowel_length`
  - removed the optional property `items/pause_mora/consonant` from the response with the `200` status
  - removed the optional property `items/pause_mora/consonant_length` from the response with the `200` status
  - added `#/components/schemas/Mora` to the `items/pause_mora` response property `allOf` list for the response status `200`
- **2024-09-26** `179894d155aa`: 6 breaking, 1 warning, 9 info
  - added the new required request property `items/pause_mora/pitch`
  - added the new required request property `items/pause_mora/text`
  - added the new required request property `items/pause_mora/vowel`
  - added the new required request property `items/pause_mora/vowel_length`
  - the `items/pause_mora` request property type changed from no type to `object`
  - the `items/pause_mora` response's property type changed from no type to `object` for status `200`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` request property `allOf` list
  - added the new optional request property `items/pause_mora/consonant`
  - added the new optional request property `items/pause_mora/consonant_length`
  - added the optional property `items/pause_mora/consonant` to the response with the `200` status
  - added the optional property `items/pause_mora/consonant_length` to the response with the `200` status
  - removed `#/components/schemas/Mora` from the `items/pause_mora` response property `allOf` list for the response status `200`
  - added the required property `items/pause_mora/pitch` to the response with the `200` status
  - added the required property `items/pause_mora/text` to the response with the `200` status
  - added the required property `items/pause_mora/vowel` to the response with the `200` status
  - added the required property `items/pause_mora/vowel_length` to the response with the `200` status
- **2024-07-20** `eb97301b5bb3`: 5 breaking, 5 info
  - `query` request parameter `core_version` list-of-types was narrowed by removing types `null`
  - added `#/components/schemas/Mora` to the `items/pause_mora` request property `allOf` list
  - removed `#/components/schemas/Mora, subschema #2` from the `items/pause_mora` request property `anyOf` list
  - request property `items/moras/items/consonant` list-of-types was narrowed by removing types `null` from media type `application/json`
  - request property `items/moras/items/consonant_length` list-of-types was narrowed by removing types `null` from media type `application/json`
  - for the `query` request parameter `core_version`, the type was generalized from no type to `string`
  - added `#/components/schemas/Mora` to the `items/pause_mora` response property `allOf` list for the response status `200`
  - removed `#/components/schemas/Mora, subschema #2` from the `items/pause_mora` response property `anyOf` list for the response status `200`
  - response property `items/moras/items/consonant` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `items/moras/items/consonant_length` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
- **2024-07-09** `1d0fcadb80c5`: 2 breaking, 1 warning, 7 info
  - response property `items/moras/items/consonant` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `items/moras/items/consonant_length` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` request property `allOf` list
  - `query` request parameter `core_version` list-of-types was widened by adding types `null`
  - for the `query` request parameter `core_version`, the type was generalized from `string` to no type
  - added `#/components/schemas/Mora, subschema #2` to the `items/pause_mora` request property `anyOf` list
  - request property `items/moras/items/consonant` list-of-types was widened by adding types `null` to media type `application/json`
  - request property `items/moras/items/consonant_length` list-of-types was widened by adding types `null` to media type `application/json`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` response property `allOf` list for the response status `200`
  - added `#/components/schemas/Mora, subschema #2` to the `items/pause_mora` response property `anyOf` list for the response status `200`
- **2024-06-28** `3b94f9a50fd2`: 5 breaking, 5 info
  - `query` request parameter `core_version` list-of-types was narrowed by removing types `null`
  - added `#/components/schemas/Mora` to the `items/pause_mora` request property `allOf` list
  - removed `#/components/schemas/Mora, subschema #2` from the `items/pause_mora` request property `anyOf` list
  - request property `items/moras/items/consonant` list-of-types was narrowed by removing types `null` from media type `application/json`
  - request property `items/moras/items/consonant_length` list-of-types was narrowed by removing types `null` from media type `application/json`
  - for the `query` request parameter `core_version`, the type was generalized from no type to `string`
  - added `#/components/schemas/Mora` to the `items/pause_mora` response property `allOf` list for the response status `200`
  - removed `#/components/schemas/Mora, subschema #2` from the `items/pause_mora` response property `anyOf` list for the response status `200`
  - response property `items/moras/items/consonant` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `items/moras/items/consonant_length` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
- **2024-05-02** `7d46d11815c2`: 2 breaking, 1 warning, 7 info
  - response property `items/moras/items/consonant` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `items/moras/items/consonant_length` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` request property `allOf` list
  - `query` request parameter `core_version` list-of-types was widened by adding types `null`
  - for the `query` request parameter `core_version`, the type was generalized from `string` to no type
  - added `#/components/schemas/Mora, subschema #2` to the `items/pause_mora` request property `anyOf` list
  - request property `items/moras/items/consonant` list-of-types was widened by adding types `null` to media type `application/json`
  - request property `items/moras/items/consonant_length` list-of-types was widened by adding types `null` to media type `application/json`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` response property `allOf` list for the response status `200`
  - added `#/components/schemas/Mora, subschema #2` to the `items/pause_mora` response property `anyOf` list for the response status `200`
- **2024-04-26** `907e5011a1aa`: 5 breaking, 5 info
  - `query` request parameter `core_version` list-of-types was narrowed by removing types `null`
  - added `#/components/schemas/Mora` to the `items/pause_mora` request property `allOf` list
  - removed `#/components/schemas/Mora, subschema #2` from the `items/pause_mora` request property `anyOf` list
  - request property `items/moras/items/consonant` list-of-types was narrowed by removing types `null` from media type `application/json`
  - request property `items/moras/items/consonant_length` list-of-types was narrowed by removing types `null` from media type `application/json`
  - for the `query` request parameter `core_version`, the type was generalized from no type to `string`
  - added `#/components/schemas/Mora` to the `items/pause_mora` response property `allOf` list for the response status `200`
  - removed `#/components/schemas/Mora, subschema #2` from the `items/pause_mora` response property `anyOf` list for the response status `200`
  - response property `items/moras/items/consonant` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
  - response property `items/moras/items/consonant_length` list-of-types was narrowed by removing types `null` from media type `application/json` of response `200`
- **2024-03-22** `ef4da11d01e0`: 2 breaking, 1 warning, 7 info
  - response property `items/moras/items/consonant` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - response property `items/moras/items/consonant_length` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` request property `allOf` list
  - `query` request parameter `core_version` list-of-types was widened by adding types `null`
  - for the `query` request parameter `core_version`, the type was generalized from `string` to no type
  - added `#/components/schemas/Mora, subschema #2` to the `items/pause_mora` request property `anyOf` list
  - request property `items/moras/items/consonant` list-of-types was widened by adding types `null` to media type `application/json`
  - request property `items/moras/items/consonant_length` list-of-types was widened by adding types `null` to media type `application/json`
  - removed `#/components/schemas/Mora` from the `items/pause_mora` response property `allOf` list for the response status `200`
  - added `#/components/schemas/Mora, subschema #2` to the `items/pause_mora` response property `anyOf` list for the response status `200`
- **2024-01-28** `2e8475c446af`: 1 breaking, 1 warning, 1 info
  - the `query` request parameter `speaker` became required
  - deleted the `query` request parameter `style_id`
  - `query` request parameter `speaker` was reactivated
- **2024-01-22** `ba5021ec9a6d`: 3 info
  - added the new optional `query` request parameter `style_id`
  - the `query` request parameter `speaker` became optional
  - `query` request parameter `speaker` was deprecated
- **2024-01-20** `2a8c9cc0823a`: 1 breaking, 1 warning, 1 info
  - the `query` request parameter `speaker` became required
  - deleted the `query` request parameter `style_id`
  - `query` request parameter `speaker` was reactivated
- **2024-01-17** `1bed97d41915`: 7 breaking, 10 warning, 5 info
  - added `#/components/schemas/Mora` to the `items/pause_mora` request property `allOf` list
  - the `items/pause_mora` request property type changed from `object` to no type
  - the `items/pause_mora` response's property type changed from `object` to no type for status `200`
  - removed the required property `items/pause_mora/pitch` from the response with the `200` status
  - removed the required property `items/pause_mora/text` from the response with the `200` status
  - removed the required property `items/pause_mora/vowel` from the response with the `200` status
  - removed the required property `items/pause_mora/vowel_length` from the response with the `200` status
  - removed the request property `items/pause_mora/consonant`
  - removed the request property `items/pause_mora/consonant_length`
  - removed the request property `items/pause_mora/pitch`
  - removed the request property `items/pause_mora/text`
  - removed the request property `items/pause_mora/vowel`
  - removed the request property `items/pause_mora/vowel_length`
  - removed the optional property `detail/items/ctx` from the response with the `422` status
  - removed the optional property `detail/items/input` from the response with the `422` status
  - removed the optional property `items/pause_mora/consonant` from the response with the `200` status
  - removed the optional property `items/pause_mora/consonant_length` from the response with the `200` status
  - api operation id `mora_length` removed and replaced with `mora_length_mora_length_post`
  - added the new optional `query` request parameter `style_id`
  - the `query` request parameter `speaker` became optional
  - `query` request parameter `speaker` was deprecated
  - added `#/components/schemas/Mora` to the `items/pause_mora` response property `allOf` list for the response status `200`

---

[Operation](https://skmtc.dev/aivis-project/apis/aivisspeech-engine/docs/mora_length/post.md) - [API](https://skmtc.dev/aivis-project/apis/aivisspeech-engine.md) - [Page](https://skmtc.dev/aivis-project/apis/aivisspeech-engine/changes/mora_length/post)