# Difference between Delta and Corpus

**URL:** <https://discourse.mozilla.org/t/difference-between-delta-and-corpus/122668>\
**Category:** Common Voice\
**Created:** [September 15, 2023, 6:39pm UTC](https://discourse.mozilla.org/t/difference-between-delta-and-corpus/122668 "2023-09-15T18:39:35Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![rodrigo\_abraham](https://avatars.discourse-cdn.com/v4/letter/r/c57346/32.png) [@rodrigo\_abraham](https://discourse.mozilla.org/u/rodrigo_abraham)\
**Post date:** [September 15, 2023, 6:39pm UTC](https://discourse.mozilla.org/t/difference-between-delta-and-corpus/122668/1 "2023-09-15T18:39:35Z")

</div>

What is the difference between Common Voice Delta and Common Voice Corpus?

---

<div class="post-metadata">

**Author:** ![bozden](https://sea1.discourse-cdn.com/flex001/user_avatar/discourse.mozilla.org/bozden/32/51381_2.png) [@bozden](https://discourse.mozilla.org/u/bozden)\
**Post date:** [September 15, 2023, 6:50pm UTC](https://discourse.mozilla.org/t/difference-between-delta-and-corpus/122668/2 "2023-09-15T18:50:01Z")

</div>

Hey @rodrigo_abraham, does this answer your question?

> [@Delta releases](https://discourse.mozilla.org/t/delta-releases/106567):
>
> Hello everyone, I’d like to announce that as of the next release of Common Voice in October, we will be providing delta release downloads in addition to the full release dataset downloads. What is a delta release? Let’s imagine you had downloaded Common Voice 10 for Catalan, a total download size of 49 GB, now Common Voice 11 is released and you want to get all that amazing new data. A delta release allows you to download only the new data, that is the difference between the Common Voice 10 rel…