Śrīmad-Bhāgavatam 12.6.43
తతోఽక్షరసమామ్నాయమసృజద్ భగవానజ: ।
అన్తస్థోష్మస్వరస్పర్శహ్రస్వదీర్ఘాదిలక్షణమ్ ॥ ౪౩ ॥
tato ’kṣara-samāmnāyam
[tato ’kshara-samaamnaayam]
asṛjad bhagavān ajaḥ
[asrijad bhagavaan ajah]
antasthoṣma-svara-sparśa-
[antasthoshma-svara-sparsha-]
hrasva-dīrghādi-lakṣaṇam
[hrasva-deerghaadi-lakshanam]
Word-for-word
tataḥ
—
from that oṁkāra
akṣara
—
of the different sounds
samāmnāyam
—
the total collection
asṛjat
—
created
bhagavān
—
the powerful demigod
ajaḥ
—
unborn Brahmā
anta-stha
—
as the semivowels
uṣma
—
sibilants
svara
—
vowels
sparśa
—
and consonant stops
hrasva-dīrgha
—
in short and long forms
ādi
—
and so on
lakṣaṇam
—
characterized.
Blended reading (Sanskrit + English inline)
tato ’kṣara-samāmnāyam
tataḥ
from that oṁkāra
asṛjad bhagavān ajaḥ
antasthoṣma-svara-sparśa-
hrasva-dīrghādi-lakṣaṇam
akṣara
of the different sounds
samāmnāyam
the total collection
asṛjat
created
bhagavān
the powerful demigod
ajaḥ
unborn Brahmā
anta-stha
as the semivowels
uṣma
sibilants
svara
vowels
sparśa
and consonant stops
hrasva-dīrgha
in short and long forms
ādi
and so on
lakṣaṇam
characterized.
From that oṁkāra Lord Brahmā created all the sounds of the alphabet — the vowels, consonants, semivowels, sibilants and others — distinguished by such features as long and short measure.
Gauḍīya Ācāryas
Viśvanātha Cakravartī Ṭhākura
Gauḍīya
Translation
From that oṁkāra Brahmā created all the sounds of the alphabet—the vowels, consonants, semivowels, sibilants and others—distinguished by such features as long and short measure.
The appearance of the Vedas from oṁ is described. From oṁ (tataḥ) Brahmā created the group of sounds—the semivowels: ya, ra, la and va; the silibants: śa, ṣa and sa; the vowels: a, i, u e, o, ai, and au; the consonants from ka to ma; and short and long sounds of different intonations. Ādi indicates things like the visarga. He created the basic form (lakṣaṇam) of sounds.
My note
Source: vedabase.io