From d0b4acc1401a2da22974fcb0139ebe9bd4bab99f Mon Sep 17 00:00:00 2001 From: Ben Hilburn Date: Wed, 29 Nov 2017 11:16:56 -0500 Subject: [PATCH] Addressing questions raised in #50 about multiple recordings per archive. --- sigmf-spec.md | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/sigmf-spec.md b/sigmf-spec.md index be2d9b1..998bf16 100644 --- a/sigmf-spec.md +++ b/sigmf-spec.md @@ -125,7 +125,7 @@ metadata file contains information that describes the dataset. #### SigMF Archives The metadata and dataset files that comprise a `SigMF Recording` may be combined -into a file archive. +into a file archive. A `SigMF Archive` may contain multiple `SigMF Recordings`. 1. The archive MUST use the `tar` archive format, as specified by POSIX.1-2001. 2. The archive file's filename extension MUST be `.sigmf`. @@ -135,8 +135,14 @@ into a file archive. 4. The archive MUST NOT contain any other files unless their pathnames begin with `N/N`, for some `N` which has `.sigmf-meta` and `.sigmf-data` files as described above. - -A `SigMF Archive` may contain multiple `SigMF Recordings`. +5. It is RECOMMENDED that if recordings in an archive represent a continuous + dataset that has been split into separate recordings, that their filenames + reflect the order of the series by appending a hyphenated zero-based index + (e.g., `N-0`, `N-1`, `N-2`, etc.,). + +Each recording in an archive, even if connected to others by being part of +a larger dataset, MUST be evaluated independently for compliance to the SigMF +standard, and thus all metadata MAY be different between the recordings. ### Dataset Format